How to Connect an XLR Microphone to Your Computer 2026: Complete Step-by-Step Guide
What You Need (Complete Checklist)
To connect an XLR microphone to your computer, you need three items: 1) An XLR microphone — e.g. Audio-Technica AT2020 ($79 condenser) or Shure SM58 ($99 dynamic). 2) An audio interface — e.g. Focusrite Scarlett Solo ($119). 3) An XLR cable — 6 feet is standard for desk use. Browse our audio cable category for quality cables.
Step 1: Connect the Interface to Your Computer
Plug the audio interface into your computer using the included USB cable. On Mac, the interface appears automatically in System Preferences > Sound > Input — no driver installation needed (Core Audio handles everything). On Windows, download and install the manufacturer's ASIO driver from their website — this provides much lower latency than Windows' default audio drivers. For the Scarlett Solo, the Focusrite Control driver gives you access to direct monitoring, sample rate selection, and buffer size adjustment.
Step 2: Connect the Microphone via XLR Cable
XLR cables have male pins on one end and female holes on the other. Plug the female end (three holes) into the bottom of the microphone. Plug the male end (three pins) into the XLR input on the front of your interface. XLR connectors lock into place with a click — press the tab on the female connector to release. The locking mechanism prevents accidental disconnection during recording.
Step 3: Enable Phantom Power (Condenser Mics Only)
Condenser microphones like the AT2020, Rode NT1, and AKG C214 require +48V phantom power to operate — the power charges the capacitor capsule inside the microphone. Press the '+48V' or '48V' button on your interface. Important: always connect the microphone before enabling phantom power, and disable phantom power before disconnecting — hot-plugging with phantom power on can cause loud pops that may damage speakers or headphones. Dynamic microphones like the SM58 do NOT need phantom power and are unaffected by it being on.
Step 4: Set the Gain (Recording Level)
Gain is the input sensitivity — how much the interface amplifies your microphone's signal before converting it to digital. To set it correctly: speak or sing at your loudest expected level. Slowly turn the gain knob clockwise while watching the level indicator (LED ring or meter). Stop when the indicator lights green consistently with occasional yellow flashes on peaks. Never let it hit red — red means clipping (digital distortion that cannot be fixed). The Scarlett Solo's 4th Gen auto-gain does this automatically in 10 seconds.
Step 5: Configure Your Recording Software
In your DAW (Logic Pro, Ableton, Reaper, Audacity) or communication app (Zoom, OBS, Discord), select the audio interface as your input device. Set the sample rate to 48 kHz and bit depth to 24-bit for optimal quality. Enable direct monitoring (if available) to hear yourself with zero latency while recording. See our XLR vs USB guide and beginner interface guide for more help.