How to Connect a Mixer to a PC: USB-C, 3.5mm and XLR Options
By Innov8 Wholesale Ltd | Published: 2026-10-14
Category: How-to Guides
A step-by-step guide to connecting a mixer to your computer using USB-C, 3.5mm, or XLR cables, with practical checks to avoid common mistakes.
Quick answer
Use a single USB cable if your mixer has a built-in USB audio interface. If it doesn't, connect the mixer's main outputs to your PC's line input using the correct cable for your mixer's output type—XLR, 6.35mm, or RCA—and a 3.5mm adapter if needed. For Lightning-based iPhones or iPads, a dedicated Lightning to dual 6.35mm cable can feed a mixer directly, but for a PC you'll typically use USB or a 3.5mm line input.
Identify your mixer's output options
Before buying any cable, look at the back or top panel of your mixer. You'll likely find main outputs in one of three forms: XLR male, 6.35mm (1/4-inch) TRS or TS jacks, or RCA phono sockets. Some mixers also have a USB port that carries audio directly to a computer. Check whether the USB port is for audio or only for power or firmware updates—many budget mixers have a USB port that only charges a phone or plays files from a stick. If your mixer has a USB audio interface, that's the simplest path. If not, you'll be using an analog output.
Choose the right cable for your connection type
For a USB audio mixer, a standard USB-A to USB-B cable (often included) is all you need. For analog outputs, match the connector on the mixer to the input on your PC. Most desktop PCs have a 3.5mm line-in jack (often blue) and a 3.5mm microphone jack (pink). If your mixer has 6.35mm outputs, you'll need a cable that goes from 6.35mm to 3.5mm, or a 6.35mm to 3.5mm adapter on an existing cable. If your mixer has XLR outputs, use an XLR to 3.5mm cable or an XLR to 6.35mm cable plus a 6.35mm to 3.5mm adapter. For RCA outputs, an RCA to 3.5mm cable works. Always check whether the signal is balanced or unbalanced—balanced XLR or TRS outputs need a balanced cable to avoid hum, but a 3.5mm PC input is unbalanced, so you may need a balancing transformer or a DI box for long runs.
Set levels and avoid ground loops
Once connected, set the mixer's main output fader to a moderate level and adjust your PC's input volume in the operating system's sound settings. Start with the PC input at about 50% and bring up the mixer output slowly to avoid clipping. If you hear a constant hum or buzz, you likely have a ground loop. Try plugging the mixer and PC into the same power strip or use a ground loop isolator. Keep cable runs short and away from power cables. For the cleanest signal, use balanced cables where possible, but remember that a 3.5mm PC input is unbalanced, so a balanced-to-unbalanced connection may still pick up noise.
Step-by-step mixer-to-PC connection
- Check your mixer's outputs: Look for USB, XLR, 6.35mm, or RCA outputs. If you see a USB port labeled 'USB audio' or 'USB interface', that's your best option. If it's only for power or playback, ignore it for audio output. Common mistake: assuming any USB port on a mixer carries audio. Check the manual or labels.
- Pick the matching cable or adapter: For USB audio, use a USB-A to USB-B cable. For XLR outputs, use an XLR to 3.5mm cable or an XLR to 6.35mm cable plus a 6.35mm to 3.5mm adapter. For 6.35mm outputs, use a 6.35mm to 3.5mm cable or adapter. For RCA outputs, use an RCA to 3.5mm cable. Checkpoint: confirm the cable is mono or stereo as needed. Most PC line inputs are stereo, so a mono mixer output may only record on one channel.
- Connect to the correct PC input: Plug the 3.5mm end into the blue line-in jack on your PC, not the pink microphone jack. If your PC only has a combo jack, you may need a USB audio interface with a proper line input. Common mistake: using the microphone input, which applies extra gain and can distort the signal.
- Set levels and test: Open your recording software or sound settings, set the PC input level to about 50%, then raise the mixer's main output until you see a healthy signal without clipping. Speak or play audio and watch the meter. If you hear hum, try a ground loop isolator or plug both devices into the same outlet.
- Record and adjust: Arm a track in your DAW, record a short test, and listen back. If the signal is too quiet or noisy, adjust the mixer's output level or consider a dedicated audio interface with balanced inputs. For best results, keep cables short and avoid running them parallel to power cords.
Products that fit these steps
- RCA Male to 6.35mm Mono Right-Angle Audio Cable: RCA Male to 6.35mm Mono Right-Angle Audio Cable with gold-plated connectors and a right-angle 6.35mm plug designed for tight or recessed spaces. If your mixer has RCA outputs and you need to connect to a 6.35mm input on an audio interface or patch bay, this cable provides a secure fit and reduces strain in cramped setups.
- XLR Male to Right-Angle 6.35mm TRS Male Balanced Audio Cable: XLR Male to Right-Angle 6.35mm TRS Male Balanced Audio Cable carries a single balanced mono audio signal between compatible balanced connections. Use this when your mixer has XLR outputs and your audio interface or PC input accepts a 6.35mm TRS balanced connection; the right-angle plug saves space and the balanced design helps reject noise.
- Lightning (8-Pin) to Dual 6.35mm (1/4”) Audio Cable for Amplifier & Mixer – 3m: Lightning (8-Pin) to Dual 6.35mm (1/4”) Audio Cable for Amplifier & Mixer – 3m with integrated digital-to-analogue converter (DAC) for stereo playback. This cable lets you connect an iPhone or iPad directly to a mixer's 6.35mm inputs, which is useful for playing backing tracks during a live set or recording session, though it is not a PC connection.
