You plug headphones into the 1/4-inch jack on your XLR audio interface, hit play, and hear nothing. The meters in your DAW bounce, Windows shows the device is connected, and the direct monitor light might even be on, but the headphone output stays silent. More often, one side works, the sound is extremely quiet, or you only hear crackling when you turn the knob.
This is a common routing and driver problem, not a dead hardware failure, so it can usually be fixed in under ten minutes without replacing the interface. The steps below are ordered from the fastest checks to deeper driver and hardware tests, and as of early 2026 these settings and menu paths match current versions of Windows 11, macOS Sonoma/Sequoia, Focusrite Control 2, Universal Control, and Steinberg dspMixFx. Work through them in order and test sound after each fix.
Likely Causes
| Cause | How to confirm | Fix difficulty |
|---|---|---|
| Wrong Windows/macOS output device or muted headphone mix | Sounds plays through laptop speakers or interface main outs but not headphones; Sound settings show different Default Device | Easy |
| Headphone volume / Direct Monitor / Mix knob at zero | Gain LEDs light up on mic input, interface software shows signal, physical headphone knob or software fader is fully down | Easy |
| DAW routing to Line Outputs 1-2 instead of Headphone bus | DAW master meter moves but headphone mixer tab shows no activity on HP1/HP2 | Easy |
| Corrupt or generic USB audio driver / sample rate mismatch | Device appears as USB Audio Device, crackles at 44.1 kHz vs 48 kHz, or shows yellow warning in Device Manager | Medium |
| Incorrect impedance / TRS vs TRRS plug or partially seated adapter | Sound only in one ear, plugging halfway restores audio, or 250-ohm headphones need near-max volume for audible output | Easy |
| Failed headphone amp or USB power delivery issue | No sound with multiple headphones and adapters on same jack, but rear line outputs work via monitors | Hard |
Fix 1: Set the Interface as the System Default and Unmute the Headphone Output
What causes it
Windows and macOS can keep sending system audio to the previous device after you plug in an interface. Even when the interface is selected, the headphone bus has its own mute and level control that is separate from the Main Output in Windows Sound.
How to check
On Windows 11, press Win + I, go to System > Sound > Output. Check what is listed under Choose where to play sound. Play a YouTube video and watch the volume meter under that device. On macOS, go to Apple menu > System Settings > Sound > Output and see which device has the filled selector dot. If the meter moves on Internal Speakers or Line Out but not on your interface name, the system is not routing to headphones.
What to do
On Windows 11, in System > Sound > Output, click your interface, for example Focusrite Scarlett 2i2 USB or PreSonus AudioBox USB, then click Set as Default Device and Set as Default Communications Device. Click the volume slider and set it to 70 to 85. Click the speaker icon to unmute if it shows a slash. Then scroll to Advanced > All sound devices > your interface > Properties and confirm Output volume is not 0 and Spatial sound is Off.
On macOS, in System Settings > Sound > Output, select the interface and drag Output volume to 75 percent. Open Audio MIDI Setup in Applications > Utilities, select the interface on the left, and verify Master stream sliders for Headphone 1 and Headphone 2 are at 0.0 dB and M is not checked.
How to undo it
Return to System > Sound > Output or System Settings > Sound > Output and reselect Internal Speakers or your previous device as Default. Re-enable Spatial sound or re-mute if you preferred it muted.
Fix 2: Turn Up the Physical Headphone Knob and Correct the Monitor Mix
What causes it
Most XLR interfaces have an independent headphone amplifier with its own knob, plus a Direct Monitor switch or a Mix/Playback knob that blends direct input with USB playback. If the knob is at zero or the mix is set 100 percent to input with no mic connected, playback from the computer will be inaudible in the headphones.
How to check
Look at the front panel. Confirm the headphone icon knob position, usually labeled Phones, Headphone, or HP. With audio playing, raise the knob to 12 o’clock and listen. Check for a button or knob labeled Direct Monitor, Monitor, or Input/Playback. If it is a button, note if the LED is on. If it is a knob, note if it is turned fully to Input.
What to do
Set Main/Monitor volume to 9 to 10 o’clock so monitor speakers do not blast. Set the Headphone knob to 11 to 1 o’clock. If you have a Direct Monitor switch, set it to Off for DAW playback testing. If you have an Input/Playback or Mix knob, turn it to the center or fully to Playback. In software mixers like Focusrite Control 2 > Output Routing or UA Console > Cue Outputs, drag the Playback 1-2 fader for the HP output to 0.0 dB and unmute it.
How to undo it
Return the Direct Monitor switch to On if you need zero-latency monitoring for recording, and return the Mix knob to your preferred blend, typically center. Lower the Headphone knob to your normal listening level.
Fix 3: Route Your DAW Master to the Headphone Outputs
What causes it
Many DAWs default the master bus to Outputs 1-2, which feeds the rear line outputs, not the headphone bus on interfaces that expose 4 or more outputs. The headphone jack may mirror 3-4 or have its own dedicated cue mix that receives no signal until you assign it.
How to check
In your DAW, play a project and observe the master meter. Then open your interface control software. In Focusrite Control 2, open the Output Routing tab. In Steinberg dspMixFx, open the Mixer tab. In PreSonus Universal Control, open Mixer > Headphone. If the meter for HP1 or Phones shows no activity while Playback 1-2 does, the DAW is not feeding the headphone bus.
What to do
In Reaper, go to Options > Preferences > Audio > Device and confirm Output range is set to include your headphone outputs, then in the Master track click Route and add Hardware Output > Output 3/Output 4 if your phones are on 3-4. In FL Studio, go to Options > Audio Settings and set Output to your interface, then in the Mixer select the Master and on the right set Out to 3 – 4. In Ableton Live, go to Options > Preferences > Audio > Output Config and enable 3/4 Stereo, then set Master Output to Ext. Out 3/4 for testing. In Audacity, go to Audio Setup > Playback Device and choose Headphones (your interface) explicitly.
How to undo it
Set the Master output back to 1/2 or Ext. Out 1/2 so your studio monitors receive the main mix. In Output Config, disable the extra 3/4 outputs you enabled.
Fix 4: Fix Sample Rate Mismatch and Reset Exclusive Mode
What causes it
When Windows, the interface control panel, and the DAW each request a different sample rate such as 44.1 kHz versus 48 kHz, the USB audio stream can stall and send silence to the headphone amp while still showing as connected. Exclusive mode can also lock the device so only one app has audible output.
How to check
On Windows, right-click the speaker icon > Sound settings > More sound settings > Playback tab > double-click your interface > Advanced tab. Note the Default Format, for example 24-bit, 48000 Hz. In your interface app, check Settings > Sample Rate. In your DAW, check Audio Settings > Sample Rate. If any two values differ, you have a mismatch.
What to do
Close your DAW. In the interface app set Sample Rate to 48000 Hz. In Sound > Playback > Properties > Advanced, set Default Format to 24-bit, 48000 Hz and uncheck Allow applications to take exclusive control of this device and Give exclusive mode applications priority, then click Apply. On macOS, open Audio MIDI Setup > select interface > Format > set to 48000.0 Hz and 24-bit. Reopen your DAW and set its sample rate to 48000 Hz as well. Press Win + Ctrl + Shift + B to restart the graphics/audio stack if sound does not return immediately.
How to undo it
Recheck Allow applications to take exclusive control of this device if you need low-latency exclusive WASAPI or ASIO access for professional DAWs. Return sample rate to 44100 Hz if your projects are archived at that rate, making sure all three locations match.
Fix 5: Reinstall the Correct ASIO/USB Driver and Restart Windows Audio Service
What causes it
Windows may fall back to the generic USB Audio 2.0 driver after an update. The generic driver often powers phantom power and line outs but leaves the headphone DAC uninitialized or maps outputs incorrectly, resulting in no sound in the jack.
How to check
Press Win + X > Device Manager > expand Sound, video and game controllers. If you see USB Audio Device instead of Scarlett, AudioBox, SSL2, MOTU M Series, or your brand name, you are on the generic driver. Also check Device Manager > Universal Serial Bus controllers for a yellow warning icon on USB Composite Device.
What to do
Unplug the interface. Download the current driver from the manufacturer downloads page and install it. Then press Win + R, type appwiz.cpl, uninstall any older driver version. Press Win + R, type services.msc, find Windows Audio and Windows Audio Endpoint Builder, right-click each and choose Restart. Reconnect the interface directly to a rear USB port, not a hub, and wait for the driver name to appear correctly. In your DAW, reselect the ASIO driver by name, for example Focusrite USB ASIO or PreSonus AudioBox ASIO, and set Buffer Size to 256 samples for testing.
How to undo it
If the new driver causes worse latency, open Device Manager, right-click the interface > Properties > Driver > Roll Back Driver, or reinstall the previous version you downloaded. Restart the two audio services again.
Fix 6: Reseat the Adapter, Verify TRS, and Match Headphone Impedance
What causes it
A 3.5 mm to 1/4-inch adapter that is TRRS, for headset mics, or not fully seated will short one channel and produce silence or audio in one ear only. High-impedance headphones in the 250 to 600 ohm range also sound silent unless the amp has enough power, which makes users think the jack is dead.
How to check
Remove the adapter and inspect it. A correct headphone adapter has two insulating black bands for TRS. If it has three bands, it is TRRS and often incompatible. Insert the 1/4-inch plug firmly until you feel a distinct click; the metal sleeve should not show. Test with another pair of consumer earbuds in the 16 to 32 ohm range at 20 to 40 percent volume. Check the headphone spec label for impedance.
What to do
Use a dedicated TRS 3.5 mm female to 6.35 mm male stereo adapter, not a mono TS or headset splitter. Fully depress the adapter and then pull back 1 mm if contact is intermittent, which indicates a worn jack. In your interface app, if there is a High Power or High Gain switch for the headphone output, enable it for headphones over 100 ohms. Set headphone level between 60 and 85 percent for 250-ohm models like DT 770 Pro 250 ohm and avoid maxing at 100 percent for long periods.
How to undo it
Swap back to your original adapter if it was correct and needed for another device. Turn off High Power mode when returning to low-impedance earbuds to avoid excessive hiss.
Fix 7: Test USB Power and Hardware, Disable Power Saving
What causes it
Underpowered USB ports, selective suspend, and front-panel case hubs can starve the headphone amplifier. The interface may light up and pass line-out audio at low current but the headphone amp cuts out. A failed jack solder joint creates the same symptom.
How to check
Play audio through the rear 1/4-inch or XLR line outputs to powered monitors. If monitors produce sound but headphones on the same interface do not with multiple headphones, the headphone amp path is isolated. Try a different USB cable and a rear USB 3.0 port directly on the motherboard. Check for noise when wiggling the headphone plug gently.
What to do
Press Win + X > Device Manager > Universal Serial Bus controllers > right-click USB Root Hub > Properties > Power Management > uncheck Allow the computer to turn off this device to save power. Go to Control Panel > Power Options > Change plan settings > Change advanced power settings > USB settings > USB selective suspend setting > set to Disabled. On a laptop, test with the charger connected. If you have a powered USB hub with 12V input, test through that. For desktop, avoid USB 2.0 hubs and cables longer than 2 meters.
How to undo it
Re-enable Allow the computer to turn off this device to save power and set USB selective suspend back to Enabled if you need battery saving. If the jack only works when wiggling the plug, discontinue use and contact support, as continued wiggling can damage the board.
If Nothing Works
Do a clean isolation test. Try the interface on a second computer with a fresh driver install and a known good TRS adapter and 32-ohm headphones. If sound returns there, the issue is your original OS configuration, and a Windows in-place repair install or macOS create new user account test will resolve leftover routing. Delete app preference files such as %AppData%\Focusrite\Focusrite Control 2\settings.json or ~/Library/Preferences/com.presonus.universalcontrol.plist and reboot.
If no headphone sound on two computers, but line outputs work and the headphone knob produces static when turned quickly from 0 to 100, the headphone amplifier or jack has likely failed. Check warranty status by serial number on the bottom label and open a ticket with the manufacturer with photos of the jack and a short video showing the no-sound test. Do not open the chassis yourself if it is still under warranty.
FAQ
Why do my XLR mic and headphones both go silent at the same time?
Phantom power at +48V has no effect on the headphone output. If both mic input and headphone output die together, the interface lost USB power or the driver crashed. Unplug USB for 10 seconds, plug into a rear port, and restart Windows Audio services in services.msc. Check that the USB cable is data-rated, not charge-only.
Should I use ASIO, WASAPI, or DirectSound for the headphone jack?
For DAWs on Windows, select the manufacturer ASIO driver for the lowest latency and full routing to Headphone 1/2, with buffer size 128 to 512 samples. For browsers and games, use the Windows Audio or WASAPI Shared device that appears as Speakers (your interface). Using two different drivers at different sample rates at the same time will mute one output.
Why do I hear sound in only one ear on the headphone jack?
This is almost always a TRS vs TRRS adapter problem or a DAW that is panned hard left. Replace the adapter with a stereo TRS adapter with two bands, push it fully in, and in your DAW check that the track pan is centered and output is Stereo, not Mono Left. Test with a mono source like a YouTube mono test video to confirm both sides.
Do I need to install separate drivers for the headphone jack?
No, the headphone jack uses the same USB audio driver as the rest of the interface. You do not install a headphone-only driver. Install the single unified driver package, set the interface as your Playback device at 24-bit 48000 Hz, and use the interface control software to unmute and raise the HP mix if it is separate from the main mix.
