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. 238 interfaces match current criteria.)

FireWire 400 (97)       |      FireWire 800 (9)       |      mLAN (8)       |      USB 1 (121)       |      USB 2 (24)
Make Model Port Mic Pres Bit/Sample Ratesort icon List Price Shop New Shop Used Notes Details
Native Instruments Audio 8 DJ USB 2 1 24bit/96.0k $449.00 Shop New

4 stereo inputs (8 RCA), 4 stereo outputs (8 RCA), 2 optional phono preamps, MIDI I/O, headphone out, compatible with Final Scratch...

Details
ART Tube MP with USB USB 1 1 24bit/96.0k $129.00 Shop New

XLR and 1/4” Inputs and Outputs, tube mic preamp, phantom power, high cut, phase reverse, limiter, Selectable input impedance.

Details
ART TubeFire 8 FireWire 400 8 24bit/96.0k $699.00 Shop New

8 XLR or 8 1/4” inputs (combo jack), 8 balanced 1/4" TRS outputs, 8 tube mic preamps, word clock i/o, phantom power, 10 db pad, high cut...

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Line 6 TonePort UX1 USB 1 1 24bit/96.0k $175.00 Shop New

Guitar/Bass Input (1/4"), Stereo Line Inputs, Stereo Line Outputs (1/4"), Stereo Monitor Out, 16 amp modeling settings, 24 speaker...

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Line 6 TonePort UX2 USB 1 2 24bit/96.0k $269.00 Shop New

2 Guitar/Bass Inputs (1/4"), Stereo Line Inputs, Stereo Line Outputs (1/4"), SPDIF Out, Stereo Monitor Out, VU Meters, 16 amp modeling...

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Line 6 TonePort KB37 USB 1 2 24bit/96.0k $415.00 Shop New

MIDI keyboard controller (37-note), 2 Guitar/Bass Inputs (1/4"), Stereo Line Inputs, Stereo Line Outputs (1/4"), SPDIF Out, Stereo...

Details
Digidesign Digi 003 Factory (MX003) FireWire 400 4 24bit/96.0k $2495.00 Shop New

Audio I/O and control surface with 8 analog in (4 mic-level XLR or 4 line/instrument TRS, plus 4 line-level TRS), 8 analog out (8 TRS...

Details
Digidesign 003 Rack Factory (MX003R) FireWire 400 4 24bit/96.0k $1695.00 Shop New

Audio I/O (rackmounted) with 8 analog in (4 XLR or TRS, 4 TRS), 8 analog out (TRS), ADAT I/O, S/PDIF I/O, wordclock I/O, MIDI I/O,...

Details
Digidesign 003 Rack (MX003R) FireWire 400 4 24bit/96.0k $1295.00 Shop New

Audio I/O (rackmounted) with 8 analog in (4 XLR or TRS, 4 TRS), 8 analog out (TRS), ADAT I/O, S/PDIF I/O, wordclock I/O, MIDI I/O,...

Details
Digidesign Mbox 2 Factory USB 1 2 24bit/48.0k $595.00 Shop New

2 analog in (mic/line/DI), 2 analog out (TRS), S/PDIF i/o, MIDI i/o, headphone out, includes Pro Tools LE software and "Factory" plug-...

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Digidesign Mbox 2 Pro FireWire 400 2 24bit/96.0k $799.00 Shop New

4 analog in (2 XLR/TRS combo, 2 TRS), 6 analog out (4 TRS, 2 unbalanced insert jack), phono preamp (dedicated RCA), S/PDIF i/o, MIDI i/o...

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Digidesign Mbox 2 Pro Factory FireWire 400 2 24bit/96.0k $899.00 Shop New

4 analog in (2 XLR/TRS combo, 2 TRS), 6 analog out (4 TRS, 2 unbalanced insert jack), phono preamp (dedicated RCA), S/PDIF i/o, MIDI i/o...

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Digidesign Mbox 2 Mini USB 1 1 24bit/48.0k $329.00 Shop New

2 analog in (1 XLR,or 2 TRS), 2 analog out (TRS), headphone out, includes Pro Tools LE software. (Note strict CPU and drive...

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Apogee Ensemble Mobile FireWire 400 4 24bit/192.0k $2495.00 Shop New

DC-powered version of the Ensemble. 8 analog in (4 XLR, 4 TRS), 8 analog out (TRS), (4) Hi-Z instrument inputs, (2) analog inserts, ADAT...

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Apogee Duet FireWire 400 2 24bit/96.0k $599.00 Shop New

2 ch analog in on XLR, 2 ch analog in on 1/4" instrument, 2 ch analog out on 1/4", all I/O on breakout cable, headphone out, phantom...

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CME Xcorpio I USB 2 24bit/96.0k $159.00 Shop New

2 analog in on TRS, 2 analog out on RCA, headphone out. Small clip-on "bionic portable design" for guitarists.

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Ego Systems (ESI) Quata-Fire XL FireWire 400 2 24bit/192.0k $499.00

4 channel 96 kHz analog input (2 XLR/TRS combo, 2 RCA), 8 channel 192 kHz analog output (2 XLR, 2 RCA, 2 TRS stereo), headphone amp, S/...

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Prism Orpheus FireWire 400 4 24bit/192.0k $5000.00 Shop New

8 in (4 combo XLR/TRS), 8 out (TRS), 2 instrument in, Optical I/O, S/PDIF I/O, wordclock I/O, MIDI I/O, 2 headphone outs.

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Tascam US-122mkII USB 2 2 24bit/96.0k $199.00 Shop New

2 analog input (2 XLR or 2 1/4" TRS or 1 instrument), 2 analog out (RCA), MIDI i/o, headphone out, includes Steinberg Cubase LE4.

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Tascam US-144mkII USB 2 2 24bit/96.0k $270.00 Shop New

2 analog input (2 XLR or 2 1/4" TRS, 1 instrument), 2 analog out (RCA), instrument input, S/PDIF i/o, MIDI i/o, headphone out.

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