Headphones Specifications – My New Microphone

There is a wide variety of headphones and headphone types on the market that are defined by a large number of specifications. These specs tell us a lot about the headphones and how they're likely to perform. Of course, it's always best to listen critically and make up your own mind about headphones but knowing and understanding the specs is also important. What are headphone specifications? Headphones specifications, shown on specifications/datasheets, are pieces of information that tell us the electrical, mechanical, acoustic and physical characteristics of a pair of headphones (or earphones) and how the headphones perform under normal circumstances. In this article, we’ll describe each of these headphone specifications and what they mean to the overall functionality of the headphones in question. Note that some headphones will be subject to different specs than others and we'll cover even the more obscure specifications in this article. Headphones Specifications Headphones are complex transducer and can be defined by all sorts of specifications. I will list out all the potential specifications you may find on headphone datasheets, manuals and selling pages. Each spec will be described briefly with links to more in-depth articles when applicable. I will also add real-world examples of headphones that have the specifications mentioned. In order to provide real-world examples of each specification, I’ve collected a series of datasheets/product pages from specific headphone manufacturers of various headphone types. The examples are listed below: The included links will bring you to the bottom of this article where each of the headphones is described in more detail with all their specifications laid out as reference. Alternatively, you can skip to the section Headphone Examples For This Article by clicking the link. Headphone TypeReal World Example Circumaural Closed-Back HeadphonesSennheiser HD280 Pro Supra-aural Open-Back HeadphonesGrado Labs SR80e Bluetooth Wireless HeadphonesMaster & Dynamic MW60 True Bluetooth Wireless EarphonesKlipsch T5 EarphonesSennheiser CX 2.00i Electrostatic HeadphonesSTAX SR-009 Planar Magnetic HeadphonesHiFiMan Susvara Balanced Armature IEM EarphoneShure SE535 Bone Conduction HeadphonesAftershokz Titanium HeadsetClear-Com CC-400-X4 USB HeadsetLogitech H390 Noise-Cancelling HeadphonesSony WH-1000XM3 List Of Headphones Specifications ModelFeaturesColorWearing StyleContact PressureEar CouplingDriversMaterialsAntennaEarpadsJack/Plug (Connection)Connection CableWeightTransducer Principle/TypeFrequency ResponseSensitivity/Sound Pressure Level (SPL)Maximum Sound PressureTotal Harmonic DistortionImpedanceLoad RatingDriver Matched dBLeft & Right IdentificationNoise IsolationNoise-Cancelling SpecificationsMicrophoneType (Element)ImpedanceFrequency ResponsePolar PatternSensitivityBluetooth SpecificationsVersionCompatible ProfilesCompatible CodecsRangeBattery SpecificationsElectrostatic CapacitanceControlsWater ResistanceOperational TemperatureStorage TemperatureSystem RequirementsDimensionsPackagingWarrantyPart NumberIncluded Accessories Model The model simply states the name of the specific headphone. This specification is redundant since the name of the headphone will be clearly stated elsewhere (like in the title of the specs sheet). Examples Master & Dynamic MW60 Model: WM60 Back to the full list of headphones specifications. Features Features include paragraphs and/or lists of key characteristics the manufacturer believes are important to describe their headphone. These descriptions give us a good idea as to what the headphone is all about and what the manufacturer designed the headphone to do. The features section will also typically introduce any proprietary technology in the headphone design. Examples Aftershokz Titanium Features: Bluetooth 4.1EQ settingsPremiumPitch+™ Clear-Com CC-400-X4 Features: Double-ear standard headsetHigh quality dynamic cardioid microphoneHigh ambient-noise attenuation headphonesMicrophone: 300Hz – 20kHz frequency responseHeadphone: 40Hz – 20kHz frequency responseCushioned with soft leatherette paddingFlexible gooseneck microphone positioning300-degrees boom mic rotation for ON/OFF mic-mute switchRugged design Logitech H390 Features: USB Computer HeadsetDigital Stereo SoundNoise Canceling MicIn-Line ControlsPadded Headband And Ear CupsUSB-A Connection Back to the full list of headphones specifications. Color The color (or color options) of the headphone. Examples Sennheiser HD280 Pro Color: black Sony WH-1000XM3 Color Options: Black or Silver Back to the full list of headphones specifications. Wearing Style The wearing style of the headphone is a somewhat redundant physical specification. It refers to how the headphone ought to be worn. Generally, this differentiates headband models (headphones) from in-ear models (earphones). It can also pertain to over-ear or on-ear headphone models. Examples Sennheiser HD280 Pro Wearing style: Headband Klipsch T5 Style: In-Ear Monitor Back to the full list of headphones specifications. Contact Pressure Headphones are worn on the head and apply some amount of pressure on or around our ears. Some manufacturers go through the trouble of measuring the contact pressure the headphone will apply to our heads when worn. To really understand this specification, we must understand how the measurement was conducted. Ask how wide were the headphones spread, for example. Examples Sennheiser HD280 Pro Contact pressure: 6 N Back to the full list of headphones specifications. Ear Coupling Headphone drivers have diaphragms that oscillate and vary sound pressure as they do so. Human ear drums are also membranes. They move in reaction to varying sound pressure. By forming a seal between the headphone driver diaphragm and the eardrum, we create a sort of mechanical coupling that greatly improves the driver's ability to affect the ear. This sealing (known as coupling) can be achieved via in-ear earphones that plug the ear canal. Coupling is also achieved with circumaural (over-ear) headphone cups that completely cover and close off the ear. Examples Sennheiser HD280 Pro Ear coupling: circumaural Master & Dynamic MW60 Ear Coupling: Circum-aural / Over-Ear Sennheiser CX 2.00i Ear Coupling: Ear canal Back to the full list of headphones specifications. Drivers This specification gives as details about the drivers of the headphone. The drivers are the transducer elements of the headphone that convert audio signals into sound for us to hear. By that definition, they are critical and worth knowing about. The term driver typically applies to electrodynamic headphones (they are by far the most common type) but can also apply to other types (electrostatic or planar magnetic, for example). The driver specification will often give us information about the type of driver; the size of the driver (the diameter of the driver diaphragm), and/or the magnet and voice coil materials. For more information on headphone drivers and magnets, check out the following My New Microphone articles:• What Is A Headphone Driver? (How All 5 Driver Types Work)• What Is A Good Driver Size For Headphones?• Why & How Do Headphones Use Magnets?• Are The Magnets In Headphones/Earbuds Bad For You? Examples Klipsch T5 Driver Design: Dynamic Moving Coil Micro SpeakerDriver Diameter: 5.0 mm Clear-Com CC-400-X4 Driver: 40mm diameter, neodymium magnet, copper-clad aluminum wire voice coil Sony WH-1000XM3 Driver Unit: 1.57 “, dome type (CCAW Voice coil)Magnet: Neodymium Back to the full list of headphones specifications. Materials The materials specification may or may not list the materials specified in the driver spec. This all depends on what the manufacturer decides to include in its datasheet. Materials typically tell us the material used in the headphone's ear pads and ear cups, and sometimes includes the band, cable and driver material. Examples Master & Dynamic MW60 Materials: Premium grain leather, lambskin leather, stainless steel, aluminumEarpads: Detachable lambskin memory foam STAX SR-009 Ear Pads: Genuine Lamb Leather (direct skin contact), high-quality synthetic leather (surrounding portion) Back to the full list of headphones specifications. Antenna Wireless headphones have receivers and, therefore, are likely to have antennae. The antenna specification is rare but it tells us the design and/or material of the antenna. Examples Master & Dynamic MW60 Antenna: Machined aluminum Back to the full list of headphones specifications. Jack/Plug (Connection) The jack/plug connection tells us the compatibility of the headphone as it pertains to the possible connections of the headphone. It also tells is in a roundabout way if we'll need any adapters or if adapters will even work. For wired headphones, the plug is defined as the end connector of the attached cable. Some headphones have detachable cables and so this specification will tell us the jack on the headphone end. In other words, what cable can plug into the headphone. Headphone jacks are commonly 3.5mm or 6.35mm but can also be 2.5mm or even 4.4mm in some specific cases. To learn more about headphone jacks, check out the following My New Microphone articles:• Differences Between 2.5mm, 3.5mm & 6.35mm Headphone Jacks• Are AUX (Auxiliary) Connectors & Headphone Jacks The Same?• How Do Headphone Jacks And Plugs Work? (+ Wiring Diagrams) Examples Sennheiser HD280 Pro Jack plug: 3.5 / 6.3 mm stereo Master & Dynamic MW60 Headphone Connection: 3.5mm Passive Audio input micro USB charging/firmware update input Shure SE535 Input connector: 3.5mm (1/8 in.) gold-plated stereo plug Back to the full list of headphones specifications. Connection Cable The connection cable refer to the detachable cable that is to be used to connect the headphone to a headphone output. In many cases this specification will simply tell us the length of the included cable and if it's standard (straight) or coiled. Some other data sheets will tell us the internal wiring though this is rare. In headsets, the cable spec is more important as the cable must also carry a microphone signal and be compatible with its connected device. Electrostatic headphones and other headphone types that require specialized headphone amplifiers often have cables that are often unique and high-quality. Their cable specifications, then, are very important to know. For more information on headphone cables, check out my article An In-Depth Look Into How Headphone Cables Carry Audio. Examples Sennheiser HD280 Pro Connection cable: Coiled Cable (min. 1.3m / max. 3m) Master & Dynamic MW60 Cable: Detachable 1.25m Standard CableMicro USB Input Cord STAX SR-009 Cable: Silver-coated 6N (99.9999%) OFC parallel 6-strand, low-capacity special wide cable, 2.5m full length Clear-Com CC-400-X4 Cable: 5ft (1.55m) long with 8-pin connector at headset end; 4-pin Female XLR Back to the full list of headphones specifications. Weight Headphones are meant to be worn on our heads. Therefore, the weight of the headphone plays a significant role on our experience. Weight specifications typically come in two forms: Weight of the headphone with its designated cable.Weight of the headphone without a cable. Examples Clear-Com CC-400-X4 Weight: 11.1oz (315g) without 8-pin cable assembly and M3*18mm SCREW Klipsch T5 Weight: 96.9g (charging case)5.5g (earphone) Sony WH-1000XM3 Weight: Approx. 8.99 oz Back to the full list of headphones specifications. Transducer Principle/Type The transducer principle specification (often listed as "type") tells us how the headphone actually produced sound from applied audio signals. There are certain assumptions we can make about each transducer type and it help to know what kind of headphone we're looking at when glancing at a specifications sheet. The moving-coil dynamic headphone transducer type, for example, is the most common and we can expect the rest of its specifications will allow for easy comparison with other moving-coil dynamic headphones. Other transducer types, like the electrostatic headphone type, will perform differently. We should expect the headphones to have vastly different sensitivity, impedance and frequency responses. They'll also have different cables since they connect to specialized amplifiers. Moving-coil dynamic headphones are defined by their moving-coil drivers. They convert audio signals into sound waves via electromagnetic induction (electromagnetism). These HPs produce sound via conductive coils that move diaphragms in reaction to audio signals. Planar magnetic headphones convert audio signals into sound waves via electromagnetic principles. Their planar drivers are designed with thin electrical conductors embedded on a diaphragm that vibrates between two magnetic arrays. Electrostatic headphones are transducers that convert audio signals into sound waves and work on electrostatic principles. Audio signals cause varying electric fields in the driver that move the diaphragm and produce corresponding sound waves. Balanced armature (BA) models work on electromagnetic principles and utilize BA drivers that work with a coil wound around a moveable armature coupled to a diaphragm. Bone conduction headphones are transducers that convert audio signals into physical vibrations. They do so with piezoelectric drivers coupled to the listener’s jaw and/or cheekbones. The vibrations extend to the inner ear and are interpreted as sound. To learn more about the various headphone transducer types, check the following My New Microphone articles:• How Do Speakers & Headphones Work As Transducers?• How Do Headphones Work? (Illustrated Guide For All HP Types)• Complete Illustrated Guide To Moving-Coil Dynamic Headphones• Complete Guide To Bone Conduction Headphones (With Examples)• The Complete Guide To Balanced Armature IEMs/Earphones• Complete Guide To Electrostatic Headphones (With Examples)• Complete Guide To Planar Magnetic Headphones (With Examples) Examples Sennheiser HD280 Pro Transducer principle: dynamic, closed STAX SR-009 Type: Push-Pull Open Back Circular Electrostatic Headphone Shure SE535 Transducer type: Triple balanced-armature drivers Gado Labs SR80e Transducer Type: DynamicOperating Principle: Open Air Back to the full list of headphones specifications. Frequency Response Headphone frequency response refers to the frequency-specific sensitivity of the headphone's output. This specification shows the range in which the headphone is capable of reproducing sound. Note that sound is defined within the range of 20 Hz - 20,000 Hz. This is pretty much the maximum range in which we are capable of hearing (though hearing damage with diminish this range). Many manufacturer's will state the frequency response as a range from high to low without stating a tolerance value. Unfortunately, these specifications are pretty much useless to the consumer/reader of the data sheet. A tolerance value of ± 3 dB is great. It tells us the headphones will produce frequencies within its range with a maximum variation of ± 3 dB within the range. In rare cases, we may find a frequency response graph that will chart out the sensitivity of the headphone along each frequency. If you're interested in finding frequency response graphs for specific headphones, it's better to look at third-party testers like Inner Fidelity that at manufacturer's specs sheets. For an in-depth article on headphone frequency response, check out My New Microphone's What Is Headphone Frequency Response & What Is A Good Range? Examples Gado Labs SR80e Frequency Response: 20 – 20,000 Hz HiFiMan Susvara Frequency Response: 6Hz-75kHz Sony WH-1000XM3 Frequency Response: 4 Hz-40,000 HzFrequency Response (Active Operation): 4 Hz-40,000 HzFrequency Response (Bluetooth® Communication):20 Hz–20,000 Hz (44.1 kHz Sampling)20 Hz–40,000 Hz (LDAC 96 kHz Sampling, 990 kbps) Back to the full list of headphones specifications. Sensitivity/Sound Pressure Level (SPL) Headphone sensitivity is a specification that refers to the efficiency of a driver to turn an electrical audio signal into sound pressure. It is measured in dB SPL (decibels of sound pressure level) per unit of power (typically 1 milliWatt) or sometimes unit of voltage (typically 1 Volt) from the source at a frequency of 1 kHz. A more sensitive headphone, then will produce higher levels of sound at a given audio signal level. In general, earphones tend to have sensitivities in the range of 80 to 125 dB SPL/mW while headphone sensitivity ratings typically fall between 90 dB SPL and 105 dB SPL/mW. Of course, there are outliers beyond these ranges. To learn more about headphone sensitivity ratings, check out my article The Complete Guide To Headphones Sensitivity Ratings. Examples Shure SE535 Sensitivity (at 1khz): 119 dB SPL/mW STAX SR-009 Sound Pressure Sensitivity: 101dB / 100V r.m.s. 1 kHz Grado Labs SR80e SPL 1mW: 99.8 dB HiFiMan Susvara Sensitivity: 83dB Back to the full list of headphones specifications. Maximum Sound Pressure The maximum sound pressure of a headphone refers to the threshold at which the output will begin distorting. Sound pressure is generally measured within the earcup or otherwise very close to the transducer element (where our ears would be). The specification is often measured at a single frequency and noted at a given amount of total harmonic distortion in the output signal. Ensure you understand how the max SPL is tested to make sense of this specification. Examples STAX SR-009 Maximum Sound Pressure: 118dB / 400Hz Back to the full list of headphones specifications. Total Harmonic Distortion Total harmonic distortion (THD) is a measurement of the harmonic distortion in an audio signal as a percentage of cumulative overtones added to a fundamental frequency. It is most easily measured with a sine wave. This specification is a more common (and more easily understood) way of stating the headphone's maximum sound pressure level. 0.5% THD is the typical threshold when measuring a headphone's maximum sound pressure level. In other words, the maximum sound pressure level of the headphone is precisely at the point when 0.5% (or some other stated value) THD is measured in the output. The sound pressure level is noted (typically in dB or dB SPL) at a given THD. For more information about total harmonic distortion, check out my article What Is Total Harmonic Distortion In Audio And Microphones? Examples Sennheiser HD280 Pro Sound pressure level (SPL): 113 dBTHD, total harmonic distortion: 0.1 % Sennheiser CX 2.00i Sound pressure level: 119 dBTHD: < 0.5 % Back to the full list of headphones specifications. Impedance Headphone impedance refers to the inherent opposition the headphone circuitry has to the flow of electrical current. As the headphones create a circuit with an audio source, the impedance will dictate the voltage (audio signal) transfer as well as the quality and amplitude of the headphone’s sound. Optimal voltage transfer (audio signal transfer) demands that the source impedance (of the headphone amplifier or other headphone jack) be much lower (ideally a tenth or less) of the headphone's impedance. Decreasing source impedance also improves the damping factor, which essentially means the headphone amp will have more control over the movement of the headphone driver. This will lead to increased precision and less distortion in the headphone. Impedance is frequency-dependent and often varies significantly across the headphone's frequency response. Unfortunately, headphone manufacturers typically only give a nominal (average) value for their headphone impedance specs. Once again, third-party testers like Inner Fidelity will present much more detail about the true frequency-dependent impedance values of a headphone. To learn about the rather complicated topic of headphone impedance, check out my article The Complete Guide To Understanding Headphone Impedance. Examples Sennheiser HD280 Pro Nominal impedance: 64 Ω Grado Labs SR80e Nominal Impedance: 32 ohms STAX SR-009 Impedance: 145k Ω (including cable, at 10kHz) Clear-Com CC-400-X4 Impedance: 200 ohms ±30%; at 1kHz typical Back to the full list of headphones specifications. Load Rating Load rating is a peculiar specification given by Sennheiser for its headphones. Although Sennheiser does not give an explanation to this specification, we assume it is the power handling capacity of the headphone. In other words, it's the level of power at which the headphone driver will burn out (the coil will melt or the motor will over-extend). This is a common specification for passive loudspeakers that must be matched with appropriate amplifiers but not so much for headphones. For more info on speaker power handling ratings, check out my article Complete Guide To Speaker Power Handling & Wattage Ratings. Examples Sennheiser HD280 Pro Load rating: 500 mW Back to the full list of headphones specifications. Driver Matched dB Headphones are designed with 2 drivers to account for 2 ears. These drivers are ideally the exact same but some amount of difference may occur during manufacture. The driver matched dB specification refers to the maximum level difference allowed between the drivers during quality assurance. It is generally measured as a ratio in decibels. Most brands will not include this specification because reputable brands can be trusted to test their headphones extensively to ensure each driver outputs the same (or very close to the same) level. Examples Grado Labs SR80e Driver Matched dB: 0.1 dB Back to the full list of headphones specifications. Left & Right Identification Headphones go over both ears and are designed with a left and right side. There should be markings somewhere on each pair of headphones to suggest which side ought to be worn over each ear. Sometimes manufacturers add this information in the specifications sheet. Examples STAX SR-009 Left & Right Identification: “L” and “R” indicated on the arc assembly (inside head spring) Left channel cable is marked with a solid Line. Right channel is marked with a dotted Line. Back to the full list of headphones specifications. Noise Isolation Noise isolation is a measurement of how much passive noise cancellation the headphones provide when worn properly. Passive noise cancellation simply refers to the physical blocking of sound from entering your ear. Noise isolation is a fairly rare specification and is generally measured in negative decibels to show how much quieter the earphones/headphone will make the exterior environment. Examples Klipsch T5 Noise Isolation: -22dB Back to the full list of headphones specifications. Noise-Cancelling Specifications The term "noise-cancelling headphone" means there is active noise-cancellation taking place within the headphone. This means there are microphones within the headphone that record the environment. The headphone then uses this environmental noise signal to cancel out the actual noise of environment by playing it back out-of-phase as the appropriate level. As you can imagine, there are plenty of details to consider when discussing an active noise-cancelling (ANC) circuit. Some of these details are disclosed in the headphone's specifications sheet. This specification gives us insight into how the noise-cancelling circuit works and, in many cases (as with the Sony example), tells us about the proprietary technology used in the ANC circuit. For more information on noise-cancelling headphones, check out the following My New Microphone articles:• How Do Noise-Cancelling Headphones Work? (PNC & ANC)• Do Noise-Cancelling Headphones Work With Or Without Music?• Passive Vs. Active Noise-Cancelling Headphones Examples Sony WH-1000XM3 Noise Canceling: On/Off Switch: YesPersonal NC Optimizer: YesAtmospheric Pressure Optimizing: YesAmbient Sound Mode: YesQuick Attention: YesPassive Operation: Yes Back to the full list of headphones specifications. Microphone There are plenty of headsets on the market that combine microphones and headphones. There are also many earphones and wireless headphones that include microphones (for telephony and for active noise-cancellation). The microphone specifications within a headphone's data sheet tell us about the microphone inside the headphone/headset. Common microphone specs include: Type (Element)ImpedanceFrequency ResponsePolar PatternSensitivity To read about all the microphone specifications, check out my article The Full List Of Microphone Specifications (How To Read A Spec Sheet). Back to the full list of headphones specifications. Type (Element) The microphone type or "element" specification generally refers to the type of microphone transducer used in the headphone or headset. Microphone transducers act a lot like headphone transducers, only in reverse. The mic converts sound waves into audio signals. However, the mechanics of the different mic capsules are very similar to headphone drivers. Though there are plenty of microphone types, the two most common we'll find in headphone design are the moving-coil dynamic and electret condenser. For more information on the various types of microphones, check out any of the following My New Microphone articles:• Full List Of Microphone Types And Sub-Types (With Mic Examples)• Microphone Types: The 2 Primary Transducer Types + 5 Subtypes Examples Aftershokz Titanium Microphone: Dual noise-canceling mic Clear-Com CC-400-X4 Element: Dynamic Impedance Microphone impedance is a lot like headphone impedance. It's the opposition of signal flow from the microphone's output. Microphones are considered the source devices in their connection and so for optimal signal transfer, their impedances must be much lower than the load impedance they are driving. Remember that headphone drivers act as loads and, therefore, require higher impedance for optimal signal transfer from the source. Microphones require the opposite. As you may have guessed from our previous discussion on headphone impedance, the microphone impedance is frequency-dependent but don't expect any detailed graphs. The nominal microphone impedance will be listed if at all. To learn more about microphone impedance, check out my articles Microphone Impedance: What Is It And Why Is It Important? and What Is A Good Microphone Output Impedance Rating? Examples Clear-Com CC-400-X4 Impedance: 200 ohms ±30%; at 1kHz typical Frequency Response Microphone frequency response is the frequency-specific output sensitivity of a microphone. It details the relative output levels of the sound/audio frequencies a mic is able to reproduce. Frequency responses are specified as frequency ranges. Once again, do not expect a comprehensive graph/chart. We can consider ourselves lucky if we get a tolerance (± dB ) rating. For in-depth posts on microphone frequency response, check out the following My New Microphone articles:• Complete Guide To Microphone Frequency Response (With Mic Examples)• What Are Coloured And Flat Microphone Frequency Responses? Examples Sennheiser CX 2.00i Frequency response: 100–10,000 Hz Clear-Com CC-400-X4 Frequency Response: 300Hz – 20kHz Logitech H390 Frequency response (Microphone): 100 Hz -10 kHz Polar Pattern A polar pattern is a representation of a microphone’s directional sensitivity to sound pressure. In other words, polar patterns tell which direction(s) a mic will be sensitive to picking up sound and which direction(s) a mic will reject sound. There are plenty of polar pattern types but headphone/headset mics are typically either omnidirectional, cardioid or a version of hypercardioid or supercardioid. To learn more about microphone polar patterns, please read my article The Complete Guide To Microphone Polar Patterns. Examples Master & Dynamic MW60 Microphone Type: Omni-directional Sennheiser CX 2.00i Pick-up pattern: Omni-directional microphone Clear-Com CC-400-X4 Polar Pattern: Hyper-cardioid Sensitivity Microphone sensitivity is a measurement of a microphone’s efficiency as a transducer (how well it converts acoustical energy to electrical energy). A microphone’s sensitivity rating is determined by its output voltage (audio signal strength) relative to the sound pressure level it is subjected to. Headphone mic sensitivity ratings may be measured from a typical talking position with a single-frequency tone or by other means. Look into how each manufacturer tests for sensitivity to fully understand what the specification in telling us. To learn more about microphone sensitivity ratings, check out my articles What Is Microphone Sensitivity? An In-Depth Description and What Is A Good Microphone Sensitivity Rating? Examples Sennheiser CX 2.00i Sensitivity: -42dBv (1kHz) Aftershokz Titanium Microphone sensitivity: -40dB ± 3dB Logitech H390 Sensitivity (microphone): -17 dBV/Pa +/- 4 dB Back to the full list of headphones specifications. Bluetooth Specifications There are plenty of wireless Bluetooth headphones on the market today. Though it’s seemingly simple to setup (pair) Bluetooth devices, there is actually a lot of technical detail that goes into defining exactly how the Bluetooth speaker receives information. Therefore, many Bluetooth headphones have a dedicated section within their specifications that shows the details about their Bluetooth connectivity. The Bluetooth specifications include: VersionCompatible ProfilesCompatible CodecsRange Bluetooth specs also includes information on: Input Rating:Battery Status:Multipoint Pairing:NFC:Supported Content Protections: For an in-depth article on how Bluetooth headphones work, check out My New Microphone's How Bluetooth Headphones Work & How To Pair Them To Devices. Back to the full list of headphones specifications. Version The Bluetooth protocol is constantly being improved upon with periodic releases of the newest version. Each new version builds up the previous, adding extra functionality and increased efficiency while always remaining backward compatible. Two Bluetooth devices with different versions can be paired with the functionality limited to that of the earlier version. Examples Klipsch T5 Version: Bluetooth 5.0 Aftershokz Titanium Type: Bluetooth 4.1 Sony WH-1000XM3 Version: Version 4.2 Compatible Profiles Bluetooth profiles determine the kind of data that is exchanged using Bluetooth technology. In order for two Bluetooth devices to be compatible, they must support the same profiles. Each profile has its own lists of codecs that it uses to exchange information. Examples Master & Dynamic MW60 Bluetooth Profile: Bluetooth 4.1 with Aptx™ high-quality audio Klipsch T5 Profiles: A2DP 1.3, AVRCP 1.6, HSP 1.2, HFP 1.7 Aftershokz Titanium Compatible profiles: A2DP, AVRCP, HSP, HFP Sony WH-1000XM3 Profile: A2DP, AVRCP, HFP, HSP Compatible Codecs The term codec is short for coder-decoder. Bluetooth uses codecs to effectively format audio for wireless transfer and subsequent decoding in the headphone itself. Examples Klipsch T5 A2DP Codecs: SBC, AAC®, aptX® Aftershokz Titanium Compatible codecs: SBC Sony WH-1000XM3 Supported Audio Format(s): SBC, AAC, aptX, aptX HD, LDAC Range The Bluetooth range specification refers to the maximum distance between the headphone and its paired device. Exceeding this range will lead to improper transmission between devices. Examples Klipsch T5 Range: Up to 10m (33ft.) Aftershokz Titanium Wireless range: 33 feet Sony WH-1000XM3 Effective Range: Line of sight approx. 30 ft (10 m) Back to the full list of headphones specifications. Battery Specifications Wireless headphones are powered by batteries. Even some wired headphones with active circuits can be powered via batteries rather than by a power supply unit. Rather than getting into detail about each detail, let’s quickly run though the typical battery specifications: Type: The type of battery.Life/playtime: How long the battery will last from full charge under normal conditions.Standby time: How long the battery will last from full charge while the headphones are on but not playing audio.Charge time: The amount of time it takes the battery to charge from 0% to 100%.Charge port: The type of connection used to charge the headphone.Replacement/disposal: Information on how to replace and/or dispose of the battery. Examples Klipsch T5 Battery (Earpieces): 55 mAhBattery (Charging Case): 360 mAhBattery Status: iOS & Android Battery Status Monitor Aftershokz Titanium Battery life: 6 hoursBattery type: Lithium-ionCharge time: 2 hoursCharger: Micro USBStandby time: 10 days Sony WH-1000XM3 Battery: Charge Time: Approx. 3 Hours (Full charge)Battery Charge Method: USBBattery Life (Continuous Music Playback Time):Max. 30 hours (NC ON)Max. 38 hours (NC OFF)Battery Life (Waiting Time):Max. 30 hours (NC ON)Max. 200 hours (NC OFF) Back to the full list of headphones specifications. Electrostatic Capacitance Electrostatic headphones utilize electrostatic transducer elements. An electrostatic headphone transducer is effectively designed as a movable electrically-charged diaphragm sandwiched between a large parallel-plate capacitor. This capacitor has an inherent capacitance that affects its overall charge; how much voltage is required to charge it, and how much gain is required. to boost the headphone signal in order to drive the headphone transducer properly. Examples STAX SR-009 Electrostatic Capacitance: 110pF (including cable) Back to the full list of headphones specifications. Controls Controls refer to any extra buttons, dials or voice commands that engage or disengage certain features of the headphone. Examples Aftershokz Titanium Command controls: Yes Sony WH-1000XM3 Volume Control: Touch Sensor Back to the full list of headphones specifications. Water Resistance Water-resistance specifications, as the name suggests, give us an idea of how well a headphone will perform in wet or otherwise humid conditions. This specification is typically delivered as an IP rating. The IP code (Ingress Protection code) is a measure and classification of the degree of protection provided by mechanical casings and electrical enclosures against intrusion, dust, accidental contact, and water. The first digit refers to solid particle protection on a scale from 0 to 6 while the second digit refers to liquid ingress protection on a scale from 0 to 9. Here is a table describing the first digit (solid particle protection) in an IP rating: IP Code First Digit (Solid Particle Protection)Effective AgainstDescription X–No data available. 0–No protection against contact and ingress of objects. 1>50mm (2.0")Protection against any large surface. 2>12.5mm (1/2")Protection from finger and similar-sized objects. 3>2.5mm (0.098")Protection from most tools, thick wires, etc. 4>1mm (0.039")Protection from most wires, slender screws, large ants etc. 5Dust protectedIngress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment. 6Dust-tightNo ingress of dust; complete protection against contact (dust-tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow. And here is a table describing the second digit (liquid ingress protection) in an IP rating: IP Code Second Digit (Liquid Ingress Protection)Protection AgainstEffective AgainstDetails X––No data available. 0No protection.–No protection against liquid ingress. 1Dripping water.Dripping water (vertically falling drops) shall have no harmful effect on the specimen when mounted in an upright position onto a turntable and rotated at 1 RPM.Test duration: 10 minutes. Water equivalent to 1 mm (0.039 in) rainfall per minute 2Dripping water when tilted at 15°.Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle of 15° from its normal position. A total of four positions are tested within two axes.Test duration: 2.5 minutes for every direction of tilt (10 minutes total). Water equivalent to 3 mm (0.12 in) rainfall per minute 3Spraying water.Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect, utilizing either: a) an oscillating fixture, or b) A spray nozzle with a counterbalanced shield. Test a) is conducted for 5 minutes, then repeated with the specimen rotated horizontally by 90° for the second 5-minute test. Test b) is conducted (with shield in place) for 5 minutes minimum.For a spray nozzle: Test duration: 1 minute per square meter for at least 5 minutes Water volume: 10 litres per minute (0.037 imperial gal/s) Pressure: 50–150 kPa (7.3–21.8 psi). For an oscillating tube: Test duration: 10 minutes Water volume: 0.07 litres per minute (0.00026 imperial gal/s) per hole. 4Splashing of water.Water splashing against the enclosure from any direction shall have no harmful effect, utilizing either: a) an oscillating fixture, or b) A spray nozzle with no shield. Test a) is conducted for 10 minutes. b) is conducted (without shield) for 5 minutes minimum.Oscillating tube: Test duration: 10 minutes, or spray nozzle (same as IPX3 spray nozzle with the shield removed) 5Water jets.Water projected by a nozzle (6.3 mm (0.25 in)) against enclosure from any direction shall have no harmful effects.Test duration: 1 minute per square meter for at least 3 minutes. Water volume: 12.5 litres per minute Pressure: 30 kPa (4.4 psi) at a distance of 3 meters (9.8 ft) 6Powerful water jets.Water projected in powerful jets (12.5 mm (0.49 in)) against the enclosure from any direction shall have no harmful effects.Test duration: 1 minute per square meter for at least 3 minutes. Water volume: 100 liters per minute (0.37 imperial gal/s) Pressure: 100 kPa (15 psi) at distance of 3 meters (9.8 ft). 6KPowerful water jets with increased pressure.Water projected in powerful jets (6.3 mm [0.25 in] nozzle) against the enclosure from any direction, under elevated pressure, shall have no harmful effects. Found in DIN 40050, and not IEC 60529. Test duration: at least 3 minutes. Water volume: 75 liters per minute (0.27 impgal/s) Pressure: 1,000 kPa (150 psi) at distance of 3 meters (9.8 ft). 7Immersion, up to 1 meter (3 ft 3 in) depth.Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 meter (3 ft 3 in) of submersion).Test duration: 30 minutes. Tested with the lowest point of the enclosure 1,000 mm (39 in) below the surface of the water, or the highest point 150 mm (5.9 in) below the surface, whichever is deeper. 8Immersion, 1 meter (3 ft 3 in) or more depth.The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. However, with certain types of equipment, it can mean that water can enter but only in such a manner that it produces no harmful effects. The test depth and duration is expected to be greater than the requirements for IPx7, and other environmental effects may be added, such as temperature cycling before immersion.Test duration: Agreement with manufacturer. Depth specified by the manufacturer, generally up to 3 meters (9.8 ft) 9KPowerful high-temperature water jets.Protected against close-range high pressure, high-temperature spray downs. Smaller specimens rotate slowly on a turntable, from 4 specific angles. Larger specimens are mounted in the intended position when being used, no turntable required, and are tested freehand for at least 3 minutes at a distance of 0.15–0.2 meters (5.9 in–7.9 in). The specific requirements for the test nozzle are shown in figures 7, 8, & 9 of IEC (or EN) 60529. This test is identified as IPx9 in IEC 60529.Test duration: Fixture: 30 sec. in each of 4 angles (2 min. total), Freehand: 1 min/m2, 3 min. minimum. Water volume: 14–16 litres per minute (0.051–0.059 imperial gal/s) Pressure: 8–10 MPa (80–100 bar) at a distance of 0.10–0.15 meters (3.9 in–5.9 in) Water temperature: 80 °C (176 °F). Examples Aftershokz Titanium Water resistance: IP55 (water-resistant) Back to the full list of headphones specifications. Operational Temperature The operating temperature range states the range in which the headphone will perform properly. Operation outside of this range (either too cold or too hot) will lead to improper performance and even damage. Ensure you let your headphone is within the operational range for optimal performance Examples Shure SE535 Operational temperature: -18° C to 57° C (0° F to 135° F) Back to the full list of headphones specifications. Storage Temperature The storage temperature range is the manufacturer-defined safe range in which the headphone can be stored. Of course, it’s probably unlikely that the headphone will sustain damage if stored outside of this range. Rather, this specification is more so to protect the manufacturer in the case that overly hot or cold storage ends up altering the headphone in any way. Examples Shure SE535 Storage temperature: -29° C to 74° C (-20° F to 165° F) Back to the full list of headphones specifications. System Requirements Some headphones and headsets (USB types) are designed to connect directly to a computer. System requirements states the computer specifications necessary for proper functionality between the USB headphone/headset and the computer. Examples Logitech H390 System Requirements: Works with Common calling applications across almost all platforms and operating systems.Windows® or macOSChrome OS™USB port (Type A port or adapter) Back to the full list of headphones specifications. Dimensions The dimensions spec, when stated, refers to the max width, length and depth of the headphone when the headphone is being worn properly. Of course, this specification can likely be altered by stretching the headphones or collapsing them. For this reason, it is often not mentioned in headphone specifications sheets. Most of the time when dimensions are stated, they refer to the dimensions of the headphone's packaging. Examples Master & Dynamic MW60 Dimensions: 200mm x 185mm x 50mm Logitech H390 Height x Width x Depth: 200 mm x 245 mm x 72 mm Back to the full list of headphones specifications. Packaging The packing spec often states the dimensions of the package the brand new headphone will come in. Examples Klipsch T5 Dimensions (Packaging): 6.8″ H x 4.4″ W x 1.9″ D Sennheiser CX 2.00i Packaging: Dimension of product packaging (L x B x W): 100 x 35 x 148 mmDimension of inner master carton (L x B x W): 217 x 119 x 151 mmDimension of outer master carton (L x B x W): 460 x 259 x 191 mmLanguages: English, German, French, Spanish, Italian, Dutch, Portuguese Clear-Com CC-400-X4 Packaging for CC-400: 4.8 x 13 x 10.43 in (122 x 330 x 265 mm) WxHxD Back to the full list of headphones specifications. Warranty A warranty is a written guarantee, issued to the purchaser of a headphone by its manufacturer, promising to repair or replace it if necessary within a specified period of time. The warranty specification may let the buyer know a few key details about the warranty offered by the manufacturer: How long the manufacturer’s warranty will apply to one of their newly-purchased headphonesIf the warranty will be voided if the headphone is bought secondhandWhat the warranty will cover and will not coverOther limitations of the warrantyIf there are any necessary steps to obtain the warranty (product registry, for example) Many specifications sheets will simply state the amount of time the warranty is good for. Further digging is typically required to find out the other infromation. Examples Sennheiser CX 2.00i Warranty: 2 years Aftershokz Titanium Warranty: 2 years Logitech H390 Warranty: 2-Year Limited Hardware Warranty Back to the full list of headphones specifications. Part Number Some manufacturers include the part number or identification number of their product. Examples Logitech H390 Part Number: 981-000014 Back to the full list of headphones specifications. Included Accessories The included accessories “specification” lists out the other pieces that will come with a brand new purchase of the headphone. Listed accessories often include: Manuals & GuidesCable(s)Carrying casesAdaptersChargersCharging cablesExtra ear pads Note that buying secondhand equipment does not ensure all the included accessories will actually be included! Examples Sennheiser HD280 Pro What’s in the Box: 1 pair of HD 280 PRO headphones1 screw-type adaptor to 1/4″ Master & Dynamic MW60 In The Box: HeadphoneCanvas Headphone PouchCanvas Cord Case1.25m Standard CableLeather Cable BoxMicro USB Charging Cable3.5/6.3mm Gold-Plated Adapter HiFiMan Susvara Package Contents: (1) Pair of headphone(1) 3m headphone cable (4-pin XLR plug)(1) 3m headphone cable (6.35mm plug)(1) Pair of ear pads (mounted on headphone)(1) Owner’s Guide Shure SE535 Accessories: 1 – Bluetooth® 5 Earphone Communication Cable1 -micro-USB Charging Cable1 -Universal 3.5 mm Earphone Communication Cable1 -Soft Flex Sleeves (S, M, L)1 -Foam Sleeves (S, M, L)1 -Yellow Foam Sleeves1 -Triple Flange Sleeves1 -Premium Carrying Case Aftershokz Titanium What’s In The Box? Titanium HeadphonesDrawstring Carrying CaseUSB Charging CablesEarplugs Sony WH-1000XM3 What’s In The Box: Carrying CasePlug Adaptor for In-flight UseHeadphone cable (approx. 47 1/4″ [1.2 m])USB cable: Type-C™ (approx. 7 7/8″ [20 cm]) Back to the full list of headphones specifications. Headphone Examples For This Article Examples are always good. As discussed, there are plenty of headphones with plenty of specifications to define them. In writing this article, I've presented specific specifications from several real-world headphones. The specifications defined in this article can be found in the spec sheets (and product pages) of the following headphones: Back to the full list of headphones specifications. Circumaural Closed-Back Headphones The Sennheiser HD280 Pro (link to check the price on Amazon) is a circumaural (over-ear) closed-back pair of headphones. Sennheiser HD280 Pro Link to check out the specifications of the Sennheiser HD280 Pro. Color: blackWearing style: HeadbandFrequency response (Headphones): 8 - 25000 HzSound pressure level (SPL): 113 dBTHD, total harmonic distortion: 0.1 %Contact pressure: 6 NEar coupling: circumauralJack plug: 3.5 / 6.3 mm stereoConnection cable: Coiled Cable (min. 1.3m / max. 3m)Transducer principle: dynamic, closedWeight w/o cable: 285 gNominal impedance: 64 ΩLoad rating: 500 mWWhat's in the Box:1 pair of HD 280 PRO headphones1 screw-type adaptor to 1/4" Sennheiser is featured in the following My New Microphone articles:• Top Best Headphone Brands In The World• Top Best Earphone/Earbud Brands In The World• Top Best Microphone Brands You Should Know And Use Back to the full list of headphones specifications. Supra-aural Open-Back Headphones The Grado Labs SR80e (link to check the price on Amazon) is a supra-aural (on-ear) open-back pair of headphones. Grado SR80e Link to check out the Grado SR80e specifications. Transducer Type: DynamicOperating Principle: Open AirFrequency Response: 20 - 20,000 HzSPL 1mW: 99.8 dBNominal Impedance: 32 ohmsDriver Matched dB: .1 dBIn the Box:HeadphonesWarrantyGrado story-sheet6.5mm Golden Adapter Grado Labs is featured in My New Microphone's Top Best Headphone Brands In The World. Back to the full list of headphones specifications. Bluetooth Wireless Headphones The Master & Dynamic MW60 (link to check the price on Amazon) is a Bluetooth wireless headphone with a built-in microphone. Master & Dynamic MW60 Link to check out the Master & Dynamic MW60 specifications. Model: WM60Dimensions: 200mm x 185mm x 50mmDrivers: 45mm NeodymiumImpedance: 32 ohmsWeight: 345gMaterials: Premium grain leather, lambskin leather, stainless steel, aluminumCable:Detachable 1.25m Standard CableMicro USB Input CordHeadphone Connection: 3.5mm Passive Audio input micro USB charging/firmware update inputEar Coupling: Circum-aural / Over-EarMicrophone Type: Omni-directionalAntenna: Machined aluminumEarpads: Detachable lambskin memory foamBluetooth Profile: Bluetooth 4.1 with Aptx™ high-quality audioIn The Box:HeadphoneCanvas Headphone PouchCanvas Cord Case1.25m Standard CableLeather Cable BoxMicro USB Charging Cable3.5/6.3mm Gold-Plated Adapter Back to the full list of headphones specifications. True Bluetooth Wireless Earphones The Klipsch T5 (link to check the price on Amazon) is a pair of true wireless Bluetooth earphones. Klipsch T5 Link to check out the Klipsch T5 specifications sheet. Style: In-Ear MonitorDriver Design: Dynamic Moving Coil Micro SpeakerDriver Diameter: 5.0 mmMic/Remote: cVc 8.0 Quad-micFrequency Response: 10Hz-19kHzNoise Isolation: -22dBInput Connections: BluetoothBattery (Earpieces): 55 mAhBattery (Charging Case): 360 mAhBluetooth® Specifications:Version: Bluetooth 5.0Profiles: A2DP 1.3, AVRCP 1.6, HSP 1.2, HFP 1.7A2DP Codecs: SBC, AAC®, aptX®Range: Up to 10m (33ft.)Input Rating: 5V DC, 1.0ABattery Status: iOS & Android Battery Status MonitorWeight:96.9g (charging case)5.5g (earphone)Colors: BlackDimensions (Packaging): 6.8" H x 4.4" W x 1.9" D Klipsch is featured in the following My New Microphone articles:• Top Best Home Speaker Brands You Should Know And Use• Top Best Loudspeaker Brands (Overall) On The Market Today• Top Best Subwoofer Brands (Car, PA, Home & Studio) Back to the full list of headphones specifications. Earphones The Sennheiser CX 2.00i (link to check the price on Amazon) is a pair of earphones with a built-in microphone. Sennheiser CX 2.00i Link to check out the Sennheiser CX 2.00i specifications sheet. General Data:Ear Coupling: Ear canalTransducer principle: DynamicCable length: 1.2 mConnector plugs: 3.5 mm plug, angledDelivery Includes:CX 2.00 headsetEar adapter set (XS, S, M, L)Headphones:Frequency response: 17–20,000 HzImpedance: 28 ΩSound pressure level: 119 dBTHD: < 0.5 %Microphone:Frequency response: 100–10,000 HzPick-up pattern: Omni-directional microphoneSensitivity: -42dBv (1kHz)Packaging:Dimension of product packaging (L x B x W): 100 x 35 x 148 mmDimension of inner master carton (L x B x W): 217 x 119 x 151 mmDimension of outer master carton (L x B x W): 460 x 259 x 191 mmLanguages: English, German, French, Spanish, Italian, Dutch, PortugueseWarranty: 2 years Back to the full list of headphones specifications. Electrostatic Headphones The STAX SR-009 (link to check the price on Amazon) is an electrostatic headphone. STAX SR-009 Link to check out the STAX SR-009 specifications. Type: Push-Pull Open Back Circular Electrostatic HeadphoneFrequency Response: 5 - 42,000HzElectrostatic Capacitance: 110pF (including cable)Impedance: 145k Ω (including cable, at 10kHz)Sound Pressure Sensitivity: 101dB / 100V r.m.s. 1 kHzMaximum Sound Pressure: 118dB / 400HzBias Voltage: 580V DCLeft & Right Identification: "L" and "R" indicated on the arc assembly (inside head spring) Left channel cable is marked with a solid Line. Right channel is marked with a dotted Line.Ear Pads: Genuine Lamb Leather (direct skin contact), high-quality synthetic leather (surrounding portion)Cable: Silver-coated 6N (99.9999%) OFC parallel 6-strand, low-capacity special wide cable, 2.5m full lengthWeight: 1lb without cable / 1.3lb with cable Stax is featured in My New Microphone's Top Best Headphone Brands In The World. Back to the full list of headphones specifications. Planar Magnetic Headphones The HiFiMan Susvara (link to check the price at B&H Photo/Video) is a planar magnetic headphone. HiFiMan Susvara Link to the HiFiMan Susvara User Manual. Frequency Response: 6Hz-75kHzImpedance: 60ΩSensitivity: 83dBWeight: 450g (15.9oz)Package Contents:(1) Pair of headphone(1) 3m headphone cable (4-pin XLR plug)(1) 3m headphone cable (6.35mm plug)(1) Pair of ear pads (mounted on headphone)(1) Owner’s Guide Back to the full list of headphones specifications. Balanced Armature IEM Earphone The Shure SE535 (link to compare prices on Amazon and B&H Photo/Video) is a pair of balanced armature in-ear monitors. Shure SE535 Link to check the specifications of the Shure SE535. Transducer type: Triple balanced-armature driversSensitivity (at 1khz): 119 dB SPL/mWImpedance (at 1kHz): 36 WFrequency Range: 18 Hz - 19.5 kHzInput connector: 3.5mm (1/8 in.) gold-plated stereo plugNet weight: 30 g (1 oz.)Operational temperature: -18° C to 57° C (0° F to 135° F)Storage temperature: -29° C to 74° C (-20° F to 165° F)Accessories:1 - Bluetooth® 5 Earphone Communication Cable1 -micro-USB Charging Cable1 -Universal 3.5 mm Earphone Communication Cable1 -Soft Flex Sleeves (S, M, L)1 -Foam Sleeves (S, M, L)1 -Yellow Foam Sleeves1 -Triple Flange Sleeves1 -Premium Carrying Case Shure is featured in the following My New Microphone articles:• Top Best Headphone Brands In The World• Top Best Earphone/Earbud Brands In The World• Top Best Microphone Brands You Should Know And Use Back to the full list of headphones specifications. Bone Conduction Headphones The Aftershokz Titanium (link to check the price on Amazon) is a prominent example of a bone conduction headphone. Aftershokz Titanium Link to check out the specifications of the Aftershokz Titanium. Features:Bluetooth 4.1EQ settingsPremiumPitch+™Back-a-track: N/ABattery life: 6 hoursBattery type: Lithium-ionCharge time: 2 hoursCharger: Micro USBCommand controls: YesCompatible codecs: SBCCompatible profiles: A2DP, AVRCP, HSP, HFPFrequency response: 20Hz~20KHzMicrophone: Dual noise-canceling micMicrophone sensitivity: -40dB ± 3dBMoisture detector: N/AMultipoint pairing: YesSensitivity: 100 ± 3dBStandby time: 10 daysTitanium band: PartialType: Bluetooth 4.1Warranty: 2 yearsWater resistance: IP55 (water-resistant)Weight: 36 gWireless range: 33 feetWhat's In The Box?Titanium HeadphonesDrawstring Carrying CaseUSB Charging CablesEarplugs Back to the full list of headphones specifications. Headset The Clear-Com CC-400-X4 (link to check the price on Amazon) is a professional headset. Clear-Com CC-400-X4 Link to check out the Clear-Com CC-400-X4 Specifications. Features:Double-ear standard headsetHigh quality dynamic cardioid microphoneHigh ambient-noise attenuation headphonesMicrophone: 300Hz – 20kHz frequency responseHeadphone: 40Hz – 20kHz frequency responseCushioned with soft leatherette paddingFlexible gooseneck microphone positioning300-degrees boom mic rotation for ON/OFF mic-mute switchRugged designHeadphone:Type: Closed-backDriver: 40mm diameter, neodymium magnet, copper-clad aluminum wire voice coilFrequency Response: 40Hz – 20kHzOpen Circuit Sensitivity:-61.0 dB ±3.5 dB; at 1kHz, typical98dB ±3 dB (SPL); at 1kHz typicalImpedance: 200 ohms ±30%; at 1kHz typicalMicrophone:Element: DynamicPolar Pattern: Hyper-cardioidFrequency Response: 300Hz – 20kHzImpedance: 200 ohms ±30%; at 1kHz typicalCable: 5ft (1.55m) long with 8-pin connector at headset end; 4-pin Female XLRDimension:Packaging for CC-400:4.8 x 13 x 10.43 in (122 x 330 x 265 mm) WxHxDWeight: 11.1oz (315g) without 8-pin cable assembly and M3*18mm SCREW Clear-Com is featured in My New Microphone's Top Best Headset Brands (Gaming, Aviation, Communication). Back to the full list of headphones specifications. USB Headset The Logitech H390 (link to check the price on Amazon) is a headset that connects via USB. Logitech H390 Link to check out the specifications of the Logitech H390. Features:USB Computer HeadsetDigital Stereo SoundNoise Canceling MicIn-Line ControlsPadded Headband And Ear CupsUSB-A ConnectionDimensions: Height x Width x Depth: 200 mm x 245 mm x 72 mmWeight: 0.197 KgSystem Requirements:Works with Common calling applications across almost all platforms and operating systems.Windows® or macOSChrome OS™USB port (Type A port or adapter)Input Impedance: 32 OhmsSensitivity (headphone): 94 dBV/Pa +/- 3 dBSensitivity (microphone): -17 dBV/Pa +/- 4 dBFrequency response (Headset): 20 Hz - 20 kHzFrequency response (Microphone): 100 Hz -10 kHzCable length: 2.33 mConnections: USB-A compatible (1.1, 2.0, 3.0)Package Contents:USB Computer HeadsetUser documentationWarranty: 2-Year Limited Hardware WarrantyPart Number: 981-000014 Back to the full list of headphones specifications. Noise-Cancelling Headphones The Sony WH-1000XM3 (link to check the price on Amazon) is a pair of active noise-cancelling Bluetooth wireless headphones. Sony WH-1000XM3 Link to check out the specifications of Sony's WH-1000XM3. Weight: Approx. 8.99 ozHeadphone Type: Closed, dynamicDriver Unit: 1.57 ", dome type (CCAW Voice coil)Magnet: NeodymiumImpedance: 47 ohm (1 kHz) (when connecting via the headphone cable with the unit turned on)16 ohm (1 kHz) (when connecting via the headphone cable with the unit turned off)Diaphragm: Aluminum coated LCPFrequency Response: 4 Hz-40,000 HzFrequency Response (Active Operation): 4 Hz-40,000 HzFrequency Response (Bluetooth® Communication):20 Hz–20,000 Hz (44.1 kHz Sampling)20 Hz–40,000 Hz (LDAC 96 kHz Sampling, 990 kbps)Sensitivities (dB/mW):104.5 dB / mW (1 kHz) (when connecting via the headphone cable with the unit turned on)101 dB / mW (1 kHz) (when connecting via the headphone cable with the unit turned off)Volume Control: Touch SensorCord Type: Single-sided (detachable)Cord Length: Headphone cable (approx. 3.94 ft, OFC strands, gold-plated stereo mini plug)Plug: Gold-plated L-shaped stereo mini plugInput: Stereo Mini JackWearing Style: CircumauralNFC: YesDSEE HX: YesPassive Operation: YesBattery:Charge Time: Approx. 3 Hours (Full charge)Battery Charge Method: USBBattery Life (Continuous Music Playback Time):Max. 30 hours (NC ON)Max. 38 hours (NC OFF)Battery Life (Waiting Time):Max. 30 hours (NC ON)Max. 200 hours (NC OFF)Bluetooth®:Version: Version 4.2Effective Range: Line of sight approx. 30 ft (10 m)Frequency Range: 2.4 GHz band (2.4000–2.4835 GHz)Profile: A2DP, AVRCP, HFP, HSPSupported Audio Format(s): SBC, AAC, aptX, aptX HD, LDACSupported Content Protections: SCMS-TNoise Canceling:On/Off Switch: YesPersonal NC Optimizer: YesAtmospheric Pressure Optimizing: YesAmbient Sound Mode: YesQuick Attention: YesColor Options: Black or SilverWhat's In The Box:Carrying CasePlug Adaptor for In-flight UseHeadphone cable (approx. 47 1/4" [1.2 m])USB cable: Type-C™ (approx. 7 7/8" [20 cm]) Sony is featured in the following My New Microphone articles:• Top Best Headphone Brands In The World• Top Best Earphone/Earbud Brands In The World• Top Best AV Receiver Brands In The World Back to the full list of headphones specifications.