The basic setup: what you need to plug in

To plug a guitar into your PC, you need three things: a USB audio interface, a standard guitar cable, and a USB cable. The interface is a small box that sits between your guitar and computer—it converts the guitar's analog signal into digital audio your PC can record and process. You cannot plug a guitar directly into a PC's audio jack or USB port without an interface; the signal will be too weak and the impedance won't match.

A USB audio interface costs between $50 and $200 depending on features. Common beginner models include the Focusrite Scarlett 2i2, the Behringer U-Phoria UMC202HD, and the PreSonus AudioBox USB. All three work the same way: guitar cable goes into the input, USB cable goes to your PC, and your computer recognizes it as an audio device. You'll also need a standard 1/4-inch guitar cable (the same one you'd use with an amplifier) and a USB cable—most interfaces include the USB cable in the box.

Key Takeaways

  • A USB audio interface is required to connect a guitar to a PC; direct connection to the computer's audio jack will not work.
  • Plug the guitar cable into the interface's input jack, then connect the interface to your PC with a USB cable.
  • Your PC will recognize the interface as a new audio device; you may need to set it as the default input in your sound settings.
  • Recording software (DAW) like Audacity, GarageBand, or Reaper will detect the interface once it is connected and drivers are installed.
  • Test the signal level before recording by watching the input meter on the interface or in your recording software.

Step-by-step connection process

Step 1: Install drivers (if needed). When you first plug the interface into your PC via USB, Windows or Mac will usually recognize it automatically. Some interfaces come with a driver disc or a read link on the manufacturer's website. Check the manual that came with your interface—if it says "plug and play," you can skip this step. If drivers are required, read them from the manufacturer's website before plugging in the interface.

Step 2: Connect the guitar cable. Plug one end of the 1/4-inch guitar cable into your guitar's output jack (the single jack on the body). Plug the other end into the input jack on the front of the interface. This is usually labeled "In 1" or "Guitar In" and may have a picture of a guitar next to it. Do not plug it into the output jack by mistake—that sends sound out of the interface, not in.

Step 3: Connect the interface to your PC. Plug the USB cable into the interface and into an available USB port on your computer. The interface will power on (you'll see an LED light up). Wait 10 to 15 seconds for your PC to recognize it. On Windows, you may see a notification in the bottom right corner saying a new device was found.

Step 4: Set the interface as your default input device. On Windows, right-click the speaker icon in the system tray (bottom right), select "Open Sound settings," scroll down to "Advanced," and under "Input," choose your interface from the dropdown menu. On Mac, open System Preferences, click "Sound," go to the "Input" tab, and select your interface. Your PC will now listen to the guitar instead of the built-in microphone.

Checking your signal level before recording

Before you open recording software, make sure the signal is strong enough. Most USB interfaces have an input level knob on the front—turn it slowly clockwise while playing a note on your guitar. Watch the LED meter next to the input jack. The light should flicker in the green or yellow zone when you play; if it's in the red zone, the signal is too loud and may distort. If there's no light at all, the signal is too quiet.

Aim for a level where the meter peaks in the yellow zone on the loudest notes you'll play. This gives you room to record without clipping (digital distortion). If your interface has no physical meter, open your recording software and watch the input meter there instead. You want the same result: green or yellow on peaks, never red.

Opening recording software and selecting the interface

Once the interface is connected and set as your default input, open your recording software (called a DAW, or Digital Audio Workstation). Free options include Audacity, GarageBand (Mac only), and Cakewalk by BandLab. Paid options include Reaper, Ableton Live, and Logic Pro. When you launch the software, it should automatically detect your interface.

In most DAWs, go to Settings or Preferences and look for "Audio Input" or "Audio Device." Select your interface from the list. Create a new audio track, arm it for recording (usually a red circle button), and hit the record button. Play a note on your guitar—you should see the waveform appear on the track in real time. If you see nothing, go back to your sound settings and confirm the interface is still selected as the default input.

Troubleshooting common connection problems

The interface is plugged in but my PC doesn't recognize it. Try a different USB port on your computer—some ports deliver less power than others. If you're using a USB hub, plug the interface directly into the PC instead. Restart your computer. If the interface still doesn't appear, read the latest drivers from the manufacturer's website and install them manually.

I can see the interface in sound settings, but no sound comes through. Check that the guitar cable is fully plugged into the input jack on the interface, not the output. Make sure the input level knob is turned up (not all the way, but at least halfway). In your recording software, confirm the interface is selected as the input device and that the track is armed for recording. Mute your speakers or turn down the volume to avoid feedback.

The signal is very quiet even with the level knob turned up. Your guitar cable may be damaged or loose. Unplug it and plug it back in firmly. Try a different cable if you have one. If the cable is fine, the interface input may be faulty—contact the manufacturer for a replacement.

My recording software doesn't see the interface. Restart the software after plugging in the interface. Some DAWs scan for audio devices only when they launch. If it still doesn't appear, go to the software's audio settings and manually select your interface from the input device list. On Windows, make sure the interface is set as the default input in Windows sound settings first.

Monitoring your guitar while recording

When you record, you'll want to hear yourself play. Most USB interfaces have a direct monitor button or knob on the front—this lets you hear the guitar through your headphones or speakers with almost no delay. Turn on direct monitoring and adjust the volume with the knob. This way, you hear yourself in real time while the software records the signal separately.

If your interface has no direct monitor feature, you can monitor through your recording software instead, but there will be a slight delay (called latency). This delay makes it harder to play in time. To reduce latency, lower the buffer size in your DAW's audio settings—smaller buffer means less delay, but too small and your PC may struggle. Start with a buffer of 256 samples and adjust from there.

Frequently Asked Questions

Do I need an amplifier if I'm recording to my PC?

No. The interface replaces the amplifier for recording purposes. The guitar signal goes straight from your guitar to the interface to your PC. You can still use an amplifier if you want to hear yourself through speakers, but it's not required for recording.

Can I use a microphone to record my guitar instead of an interface?

Yes, but it's less reliable. A microphone picks up room noise, background sounds, and reflections off walls. An interface records the direct signal from your guitar, which is cleaner and easier to edit. If you already have a USB microphone, you can use it to record, but expect lower sound quality.

What if my PC only has USB-C ports?

Most modern interfaces come with a standard USB-A cable. You'll need a USB-A to USB-C adapter (about $10) to connect it to a USB-C port. Alternatively, buy an interface that comes with a USB-C cable, such as the Focusrite Scarlett Solo Gen 3 or newer models.

Will this work with a laptop?

Yes. Laptops have USB ports and audio settings just like desktop PCs. The connection process is identical. Make sure your laptop has at least one free USB port and enough processing power to run your recording software without lag.

Can I record multiple guitars at once?

Only if your interface has multiple inputs. A basic 2-input interface (like the Scarlett 2i2) can record two guitars simultaneously if you plug them into separate input jacks. Single-input interfaces can only record one guitar at a time. If you need more inputs, look for an interface with four or more inputs.