Halloween DealsAmazon USHalloween week deals: useful picks before month-endAmazon US: current deals, useful picks and tech finds.Check DealsClean PCRecommendedOne scan can reveal what keeps slowing WindowsLook for cleanup and repair opportunities.Run ScanHalloween DealsAmazon USOctober picks are moving - compare before checkoutAmazon US: current deals, useful picks and tech finds.See Picks×
FREEDOM251

Freedom251 › Blog › 3.5 mm headphones

How to Connect the Beyerdynamic DT 275 PRO to a Computer, Phone, or Audio Interface

By Freedom251 Team · · 9 min read

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

The Beyerdynamic DT 275 PRO connects through a wired 3.5 mm mini stereo plug. Insert that plug into a compatible headphone output, or attach the included 6.35 mm (1/4-inch) adapter when the equipment has a matching 6.35 mm headphone socket. A computer or phone without a suitable headphone jack needs an audio adapter or interface made for that exact device; USB-C and Lightning adapters are not universally interchangeable.

The detachable cable locks into either earcup, so you can choose the left or right side and replace the cable when necessary. The steps below show how to identify the correct output, connect each type of host, avoid incompatible adapters, and troubleshoot the common failure points.

As an Amazon Associate I earn from qualifying purchases.

What the DT 275 PRO connection includes

The DT 275 PRO is a wired headphone, not a Bluetooth device. Its source-side connector is a gold-vaporised 3.5 mm mini stereo jack. Beyerdynamic lists a 6.35 mm (1/4-inch) adapter in the box. That adapter is for equipment with a 6.35 mm headphone output; it is not a converter for digital USB-C, Lightning, optical, or microphone sockets.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Item What is specified What it means when connecting
Transmission Wired The host must provide a physical headphone output or an audio adapter/interface.
Headphone plug 3.5 mm mini stereo jack Use directly with a matching 3.5 mm headphone socket.
Included adapter 6.35 mm (1/4 inch) Use only with a compatible 6.35 mm headphone output.
Nominal impedance 45 ohms A product specification; it does not predict the volume available from every host.
Nominal sound pressure level 105 dB A product specification, not a guarantee of loudness on a particular phone, computer, or interface.
Headphone-side cable connection Locking bayonet mount The cable can be fitted to either the left or right earcup and locks in place.

Beyerdynamic describes the decoupled cable design as supporting workflows “at the camera, recorder, interface, mixing console or DJ mixer.” In every case, use a socket intended to send headphone audio. A similarly shaped input, line output, speaker output, or digital port is not automatically suitable.

#1 Best Overall
Apple USB-C to 3.5 mm Headphone Jack Adapter | 1 USB Port, Music, Podcasts, Travel
  • The USB-C to 3.5mm Headphone Jack Adapter lets you connect devices that use a standard 3.5mm audio plug - like headphones or speakers - to your USB-C devices
  • Works with all devices that have a USB-C connector and support iOS 10 or later.

Before you plug in: identify the host output

Look at the computer, phone, or interface rather than starting with an adapter. Confirm both the connector size and the socket’s function.

  • 3.5 mm headphone output: connect the DT 275 PRO directly.
  • 6.35 mm headphone output: attach the supplied 6.35 mm adapter, then connect it to the headphone socket.
  • No analogue headphone socket: use a device-compatible audio adapter or an audio interface with a headphone output.
  • USB, USB-C, Lightning, optical, or HDMI: these are connection formats, not proof that the port can drive analogue headphones. The adapter or interface must contain the appropriate audio hardware and support the exact host device.

Check the symbol and manual for the socket. A headphone icon is a useful indication, but an output labelled “line out” may be intended for another use and may not provide the same level control or detection as a headphone output.

Connect the DT 275 PRO to a computer

Computer with a 3.5 mm headphone jack

  1. Set the computer’s volume to a low level before connecting.
  2. Insert the DT 275 PRO’s 3.5 mm plug fully into the headphone output. Do not force it; a partially inserted plug can produce one-sided or distorted sound.
  3. Open the operating system’s sound controls and select the connected headphone output if the computer presents more than one playback device.
  4. Play a familiar audio track and raise the volume gradually.

If the computer has separate microphone and headphone sockets, use the one marked with headphones. The DT 275 PRO’s supplied cable is for headphone listening; it is not evidence that a separate microphone input will work through the same plug.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Rank #2
USB-C to 3.5mm Audio Headphone Adapter - HiFi 2 Pack Compatible with Apple iPhone 17 16 15 Samsung Galaxy S25 S24 S23 S22 S21 Plus Pro Max Ultra Pixel iPad - Type C to Aux Cord Jack Dongle Adapter
  • 【High-Fidelity Sound Quality】With 48,000 samples per second, listen to every note with this small USB Type-C to 3.5mm Audio Headphone Adapter. Featuring a Smart DAC Chip, this precision captures deep bass, crisp highs, and a balanced midrange, enriching your music experience. [NOTE: The volume adjustment function of Apple EarPods headphones is not supported !!!]
  • 【92dBFS Signal-to-Noise Ratio】Experience seamless communication with zero distractions using the USB C to Audio Jack Adaptor. This adapter features integrated Clear Voice Noise Reduction (CVR) technology, engineered to filter out ambient noise and deliver crystal-clear conversations.
  • 【One-Click Adaptation, Port Protection Plus】This little 2-pack Type-C to Headphone Jack Adapter Kit is designed for seamless compatibility with a wide array of devices including the iPhone 16 15 Plus 16 15 Pro 16 15 Pro Max iPad Pro Air MacBook; Samsung Galaxy S24 S23 S22 S21 S20 Plus Ultra FE Z Fold 5 4 3 Z Flip 5 4 3 W24 23 22 20 Note 20 20 Ultra 10+ 10 9 8 Galaxy Tab S8 S7 S6 S5; Google Pixel 9 7 6 Pro XL ; more USB-C smartphones and tablets. also dual adapter set minimizes plug-unplug , better safeguarding your ports.
  • 【Plug and Play Dongle】This 3.5mm dongle delivers smooth, zero-delay sound—no drivers or apps required. It's also headphone-friendly, enabling you to answer phone calls, pause playback, and control volume directly from your headphones.
  • 【Fear No Tugs】 Crafted with an integrated one-piece construction, this wired earphone adapter is not only durable but also designed to withstand pulls and tugs, putting an end to worries of breakage. It ensures smooth transmission between your device, providing a reliable connection you can count on. Backed by our 24/7 online customer support, we stand ready to respond swiftly to any usage issues.

Computer with a 6.35 mm headphone output

  1. Make sure the computer’s 6.35 mm socket is a headphone output.
  2. Screw or push the included 6.35 mm adapter onto the DT 275 PRO’s 3.5 mm plug as designed, keeping the plug straight.
  3. Insert the adapted plug completely into the 6.35 mm headphone socket.
  4. Select that output in the computer’s sound settings and set a safe starting volume.

The 6.35 mm adapter changes the physical plug size. It does not add USB audio, Bluetooth, microphone support, or extra amplification.

Computer with no compatible headphone output

Identify whether the computer exposes audio through USB-C, another USB port, or a dock. Then choose an audio adapter or interface that explicitly supports headphone output for that computer and operating system. A USB-C-to-3.5 mm adapter is one possible category, but compatibility is device-specific. Some adapters are designed for a particular host type or require the computer to support the relevant audio mode.

  1. Check the computer manufacturer’s port and audio requirements.
  2. Confirm that the proposed adapter has a 3.5 mm headphone output, not only a microphone input or charging pass-through.
  3. Connect the adapter to the computer before inserting the DT 275 PRO.
  4. Select the adapter as the playback device in the computer’s sound settings.
  5. Use the supplied 6.35 mm adapter only if the external adapter or interface presents a 6.35 mm headphone socket.

Connect the DT 275 PRO to a phone

Phone with a 3.5 mm headphone socket

  1. Reduce the phone’s media volume.
  2. Plug the DT 275 PRO’s 3.5 mm connector into the phone’s headphone socket.
  3. Start playback and increase the volume slowly.

If the phone does not detect the headphones, remove any case that blocks the plug from seating fully and check that the connector is in the headphone socket rather than a service or accessory port.

Rank #3
Htrenc USB C to 3.5mm Headphone Jack Adapter, 2 Pack | Type C Aux Audio Dongle Cable Cord for iPhone18/iPhone17/iPhone 16/16 Pro/15/15 Pro/Pro Max/Plus
  • Universal Compatibility: This headphone audio adapter compatible with most of the type c phones Compatible with iPhone18/ iPhone 17/iPhone Pro/ iPhone 16/iPhone 16 Pro/ iPhone 15/ 15 Pro/ 15 Pro Max, Galaxy S21 Ultra/ S21 Plus/ S21 5G 2021, Google Pixel 5, 4, 4 XL, 3, 3 XL, 2, 2 XL, S20 FE 5F 2020, S20 5G, S20 Plus, S20 Ultra, Note 20, Note 20 Ultra, Note 10, Note 10+, Galaxy Tab S5e, Tab S6, Huawei P40 Pro, P30 Pro, P20 Pro, Mate 20 Pro, Mate 30 Pro, Mate 40 Pro, HTC, More
  • Hi-Fi Sound Quality: This USB-C to 3.5mm Audio Headphone Adapter adopted an advance DAC Smart Chip, offer high-definition audio, powerful noise reduction, you can get higher fidelity sound from it
  • Multi-function Dongle: This compact usb c to aux adapter can connect your usb c devices without audio jack to headphones, headset, speakers and other audio devices. This portable usb c to 3.5mm audio adapter enable you to listen musics and answer phone call with your headphone and support wire control function as well, such as microphone, volume control, pause and play functions
  • Durable and Reliable Construction: The Aux Adapter USB C made of enameled coated copper wire, and made by aluminum alloy casings. High-strength material offers a good anti-pull resistance function that is strong enough to withstand twist, tug, and tangle. 100% Copper wire core provides high-speed and stable signal transmission. Standard 3.5mm audio jack and USB C plug can withstand repeated plugging and unplugging
  • Plug and Play Design: Simple extension to jack connection, plug and play. Small and lightweight, easy to carry around. Unblock the world of Hi-Fi audio for you anytime anywhere. Quality ABS shell plus TPE cable materials ensure 10000+ times bending and prevent damage caused by tangling and scratching

Phone without a headphone socket

Use the phone’s supported audio connection and an adapter that converts that connection to a 3.5 mm headphone output. The exact requirement depends on the phone and its port. A USB-C-to-3.5 mm adapter that works with one phone is not established as compatible with every USB-C phone. The same caution applies to Lightning adapters and iPhones or other devices that use that connector.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
  1. Check the phone model’s documentation for supported wired audio accessories.
  2. Choose an adapter that states it supports headphone audio for that exact phone and port.
  3. Connect the adapter to the phone, then plug in the DT 275 PRO’s 3.5 mm connector.
  4. Unlock the phone if it requires permission for a newly connected accessory.
  5. Play audio and set the phone’s output level gradually.

The official help category includes the question “Is the DT 275 PRO compatible with smartphones, tablets or laptops?”, but the answer text is not exposed in the available listing. Therefore, compatibility should be established from the phone and adapter specifications rather than assumed from the presence of USB-C or Lightning alone.

Connect the DT 275 PRO to an audio interface

Audio interfaces commonly offer either a 3.5 mm or 6.35 mm headphone socket. Confirm that the socket is labelled for headphones. Do not plug the DT 275 PRO into an instrument, microphone, line, insert, or digital input.

Rank #4
JSAUX USB C to 3.5mm AUX Audio Adapter for iPhone 18 Pro Max, iPhone Duo | Smart DAC gives clear 16Bit/48kHz audio; CTIA mic and volume controls for iPhone 18/17/16/15, for Galaxy S26/S25/S24
  • 【Multi-function Dongle】This compact usb c to aux adapter can connect your usb c devices without audio jack to headphones, headset, speakers and other audio devices. Call, volume control, pause via function keys on the headphones are possible. [Note: Microphone functionality and volume adjustment function of Apple EarPods Headphones with 3.5mm Plug are not supported!]
  • 【Smart DAC Chip】The USB C to 3.5mm audio adapter features a Smart DAC chip. It is low power consumption, excellent and stable decoding performance, and maximum support for 16Bit/48Khz audio sampling rate. The DAC chip can also convert digital audio signals to analog audio signals and keep the original sound quality of your headphones. The 3.5mm female port compatible with CTIA. [Note: Not compatible with OMTP, TS and TRS microphone-only devices are not supported!]
  • 【Wide Compatibility】: JSAUX USB C headphone adapter compatible with most of the type c devices: for iPhone 18 Pro, iPhone 18 Pro Max, iPhone Duo‌/Air, iPhone 17 17 Pro 17 Pro Max, for iPhone 16 16 Plus 16 Pro 16 Pro Max, for iPhone 15 15 Plus 15 Pro 15 Pro Max, for Samsung Galaxy S26/S25/S24/S20 Ultra, S10 S9 S8 Plus, Note 20 10 10+ 9 8, for iPad Pro, iPad mini 6, MacBook, for Pixel 9 8 7 6, for Huawei Mate 60 50 40 30 20 10 and Pro, P60 P50 P40 P30 P20 and Pro, for OnePlus 6T 7 7Pro, and more
  • 【Stable Signal & Durable Material】With the relief strain design, this type c to aux adapter can stand 15000+ bending tests, which makes this adapter much more durable. Shielded enamel wire can still ensure stable signal transmission with daily use. Metal-coated connectors for better contact ensure stable and lossless audio signal transmission
  • 【Warm Tips】 If your USB C device includes a 3.5mm audio jack, this adapter may not support phone calls. For example, some models for Galaxy (S9/S8/S10, Note 9/Note 8) and for iPad Pro (11" / 12.9", including iPad Pro 2018) may not support phone calls or music control

Interface with a 3.5 mm headphone output

  1. Turn the interface’s headphone level down.
  2. Insert the DT 275 PRO’s 3.5 mm plug into the headphone output.
  3. Start playback from the computer or connected source.
  4. Raise the interface’s headphone control until the listening level is adequate.

Interface with a 6.35 mm headphone output

  1. Attach the included 6.35 mm adapter to the DT 275 PRO plug.
  2. Insert the adapted plug into the interface’s headphone output.
  3. Lower the interface’s monitor and headphone controls before testing.
  4. Play audio and adjust the headphone control independently where the interface allows it.

The manufacturer identifies interfaces, mixing consoles, cameras, recorders, and DJ mixers as intended workflow environments, but it does not specify one particular interface model. The relevant requirements remain a compatible headphone output and a correctly sized plug.

Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Support on Ko-Fi

Attach the cable to either earcup

The headphone-side cable uses a locking bayonet mount. Beyerdynamic’s support wording says: “The cable connects to the headphones via a locking bayonet mount and can be plugged into either the left or right side.” This lets you route the cable from the side that best suits your setup.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
  1. Choose the left or right earcup.
  2. Align the cable’s headphone-side connector with the bayonet socket.
  3. Push the connector in fully and turn it to engage the lock, following the connector’s shape rather than forcing it.
  4. Give the cable a gentle check for a secure connection before putting on the headphones.

To remove it, unlock the bayonet mechanism first and pull the connector straight out. Pulling the cable itself can damage the cable or the socket.

Best Value
YGKSAA 2pcs USB C to 3.5mm Female Headphone Jack Adapter | Upgrade Metal Case, Compatible With Samsung S20+/S21 Ultra, iPhone15 16 17, And More USB C Audio Devices
  • [Plug and Play]: This YGKSAA headphone adapter to usb c does not require software or drivers to be installed, just plug it into a USB-C device and use it immediately. Small and light, easy to carry.
  • [Hi-Fi Sound quality]: Equipped with a powerful built-in DAC high-resolution chip, this audio jack to usb c delivers an exceptional audio experience. Shielding current interference, eliminating music noise, ensuring clarity and purity of audio transmission. You can enjoy crystal clear sound quality and immerse yourself in the world of music.
  • [Multi-Function usbc to audio jack adapter] : This usbc to 3.5mm jack audio adapter connects your USB C device to headphones, and other audio devices. You can use the function keys on the headset to make calls, control volume, and pause.(Phones with 3.5mm jack are not supported)
  • [Wide Compatibility]: This headphone jack to usb c works with a variety of USB-C device audio devices, compatible With Samsung S20+/S21 Ultra, iPhone15 16 17, And More USB C Audio Devices. It has a wide range of compatibility, allowing you to connect 3.5mm headphones to a variety of devices, convenient and practical.
  • [What you get] : You can get 2 packs of YGKSAA headphone to usb c adapter for 12 months, if you have any questions, please contact YGKSAA Direct and we will reply by email within 24 hours.

Replacing a damaged or missing cable

Beyerdynamic lists its DJ 300 PRO X / Club connecting cable as fitting the DT 275 PRO. Verify the headphone-side bayonet connection and the source-side plug before ordering; a cable can fit the earcup while still having the wrong connector for your computer, phone adapter, or interface.

Availability varies by region and date. The cited North American listing showed the replacement cable sold out, while the European listing showed it for sale. Check the current listing for your country rather than relying on another region’s stock status.

How to choose between direct connection, an adapter, and an interface

Available host socket Recommended path Extra hardware Check before use
3.5 mm headphone output DT 275 PRO 3.5 mm plug directly into the host None Socket is an output and plug seats fully.
6.35 mm headphone output DT 275 PRO plug with the included 6.35 mm adapter Included adapter Socket is a headphone output, not a line or instrument input.
USB-C without an analogue jack Device-compatible USB-C audio adapter or interface with a 3.5 mm/6.35 mm headphone output Required adapter or interface Adapter supports that exact host and headphone audio.
Lightning without an analogue jack Device-compatible Lightning audio adapter or interface Required adapter or interface Adapter supports that exact device and provides headphone output.
Only digital or line-level outputs Use an audio interface or converter designed to provide headphones Required interface/converter Output type, connector, and host support all match.

Use the shortest path that satisfies those checks. The included 6.35 mm adapter is normally all that is needed for a compatible 6.35 mm headphone socket; buying another size adapter does not solve a digital-port compatibility problem.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Troubleshooting connection problems

No sound

  • Confirm the plug is fully inserted and the cable’s bayonet connector is locked at the earcup.
  • Check that the host selected the headphone output rather than built-in speakers, HDMI, Bluetooth, or another playback device.
  • Verify that the socket is an output. An input will not send audio to the headphones.
  • For USB-C or Lightning setups, confirm that the adapter is an audio adapter for the exact device, not merely a charging or data accessory.
  • Test the host output with another known-working headphone only as a diagnostic step, without assuming the other headphone has identical requirements.

Sound in only one ear

  • Reseat the 3.5 mm plug or 6.35 mm adapter.
  • Unlock and reconnect the bayonet cable at the earcup.
  • Check the computer, phone, or interface balance control.
  • Inspect the cable and connectors for visible damage.

Low or insufficient volume

The 45-ohm impedance and 105 dB nominal sound-pressure specification describe the headphone, not the guaranteed output of a particular host. The available material does not establish a universal volume level or prove that every setup needs a separate amplifier. Check the host’s headphone-output capability and its manufacturer’s guidance. If an interface has a dedicated headphone level control, raise that control gradually rather than changing unrelated monitor or input controls.

Hum, crackle, or intermittent audio

  • Stop playback and reseat every connector.
  • Check whether the 6.35 mm adapter is fully engaged with the 3.5 mm plug.
  • Try the alternate earcup socket to distinguish a cable-side problem from a source-side problem.
  • Inspect for a bent plug, damaged cable, or loose bayonet connection.
  • On a computer or phone adapter, test a different supported output path to determine whether the noise follows the host, adapter, or cable.

The plug will not fit

Do not force it. A 3.5 mm plug and a 6.35 mm socket require the supplied adapter, while a USB-C or Lightning port requires an audio adapter made for that device. A microphone, line, optical, or charging port is not interchangeable with a headphone socket.

Connection checklist

  • Identify the host device and its actual headphone output.
  • Match 3.5 mm directly or use the included adapter for 6.35 mm.
  • For USB-C or Lightning, verify exact device and audio compatibility before buying an adapter.
  • Confirm the socket is an output intended for headphones.
  • Lock the cable into either earcup and avoid pulling on the cable itself.
  • Start at low volume, select the correct playback device, and increase level gradually.
  • If replacing the cable, verify both the DT 275 PRO bayonet fit and the source-side plug.

Once the connector size, output function, and device-specific adapter support all match, the DT 275 PRO is a straightforward wired connection: 3.5 mm directly, or 6.35 mm through the supplied adapter.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

3.5 mm headphonesAudio InterfacesBeyerdynamic DT 275 PROheadphone connectionUSB-C audio

Leave a Reply

Your email address will not be published. Required fields are marked *

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Recommended PC Tool
Recommended PC Tool
Outdated Drivers Are Slowing You DownFree scan - exact matches
PC Slower Than It Used to Be?Free scan - under a minute

Two free Windows tools

One Free Minute Could Fix That PC

Before you go - each of these free tools takes about a minute and tackles what quietly slows a Windows PC down.

Special offer. View Outbyte info, uninstall instructions, EULA, and Privacy Policy.