The Computer Audio Interface Guide

This guide covers computer audio interfaces (sometimes referred to as "I/O"s or "breakout boxes") for PC or Mac. These provide audio input, output and additional features which improve upon any built-in audio jack. This guide does not cover internal PCI cards, just external connectors (USB, FireWire etc). See the bottom of this page for an intro to the terminology and trends.

(Sort by clicking a header. Filter by selecting a port. 121 interfaces match current criteria. See all interfaces.)

FireWire 400 (97)       |      FireWire 800 (9)       |      mLAN (8)       |      USB 1 (121)       |      USB 2 (24)
Make Model Port Mic Pres Bit/Sample Rate List Pricesort icon Shop New Shop Used Notes Details
Ego Systems (ESI) Aqua U24M USB 1 2 24bit

4 channel i/o analog, headphone amp, S/PDIF coaxial digital I/O, MIDI.

Xitel MD-Port AN1 USB 1

Analog output.

Mindprint Trio USB USB 1 1 24bit/96.0k

2 ch analog in (2 TRS line or 1 XLR mic or 1/4" instrument), 2 analog out (TRS plus 2-pair of mirrored RCA), insert (2 TRS), EQ, zero-...

Terratec Aureon 5.1 USB MKII USB 1 2 16bit/48.0k

2 analog input (3.5 mm, mic in on 3.5mm), 6 analog out (3 stereo 3.5mm), S/PDIF optical i/o, headphone out. 49.99 euro.

Onkyo MSE-U33HB USB 1 1 Shop New

2-in, 2-out, with 3-port USB hub, mic input (1/8"?) and GM/GS synth sound set.

Onkyo SE-U55 USB 1 1 Shop New

2-in, 2-out, S/PDIF coax I/O, optical I/O, mic in (1/8"), headphone out.

Edirol UA-3 USB 1 1 16bit

2 ch analog i/o, digital i/o, 1/8" mic input, instrument input, headphone out. Branded as "Edirol by Roland."

Edirol UA-25EX
2 24bit/96.0k Shop New

2 ch analog in (on XLR/TRS combo, one of which can take an instrument in), 2 ch analog out (on TRS and RCA), digital in/out (on optical...

Griffin iMic (original) USB 1 $35.00 Shop New

USB, 2 channel in and out on 1/8 inch jacks, switchable mic/line input. This has been upgraded at least once, still called iMic.

Telex P-800 USB 1 $36.00 Shop New

Discontinued, manufacturer website was formerly ...

Griffin USB Audio Hub USB 1 $39.00 Shop New

Not an audio interface. USB, 4-port hub optimized for use with USB audio devices. Discontinued.

Griffin iMic (2005) USB 1 2 $39.00 Shop New

2 channel in and out on 1/8" jacks, switchable mic/line stereo input. (Model updated 11/2005, not sure what's changed since the original...

Griffin PowerMate USB 1 $45.00 Shop New

Not an audio interface, volume knob/programmable scrolling controller for any app.

Xitel HiFi-Link USB 1 20bit $50.00 Shop New

1/8" out only, comes with 30 foot 1/8"-2RCA cable

Engineered Audio Aurius USB 1 16bit/48.0k $55.00

2 ch analog out on 1/8" jack with FM transmitter for sending to any radio receiver within 30-50 feet.

Telex P-500 USB 1 $60.00 Shop New

Analog-to-digital input only? Discontinued, manufacturer website was formerly...

Xitel MD-Port DG2 USB 1 $70.00

Toslink optical output, to connect to an optical digital device. No analog.

Xitel MD-Port I/O USB 1 $70.00

Analog input, toslink optical output.

Xitel InPort USB 1 $70.00 Shop New

Analog input marketed for converting LPs, but no phono preamp?

Hercules Muse Pocket USB 1 $75.00

USB, 2-in analog on 1/8" jack pair, 6-out analog on (3) 1/8" jack pairs, jacks are built into a desktop volume knob, only 2 channel...