Avid Pro Tools Quartet by APOGEE.

Hardly used, was too complicated for me, I bought a two channel simple Focusright unit. 

Plastic still on it.

For musicians, engineers, producers, sound designers, and audio post professionals who demand a complete
audio/MIDI creative solution, Pro Tools® | Quartet enables you to turn your Mac or PC into a high-performance yet
portable music and audio production studio. Featuring industry-standard Pro Tools software and the best-in-class
Quartet by Apogee 12x8 audio interface, Pro Tools | Quartet provides everything you need to create professionallevel productions that will help you stand out from the crowd—from first note to final mix.

Sound Amazing® with Quartet • Record performances in 24-bit/192 kHz resolution
• Connect mics, instruments, and more to high-quality I/O:
o Four combination mic/instrument/line inputs
o Eight channels of ADAT/SMUX input via Toslink
o Six 1/4” balanced line outputs for three speaker sets
or 5.1 monitoring
o One stereo headphone output
o USB MIDI I/O for a MIDI keyboard or DJ controller
• Experience the difference of Apogee’s legendary sound quality:
o Premium AD/DA conversion delivers sonic fidelity and precision
o Dynamically optimized mic preamps provide up to 75 dB of
transparent gain
o Selectable Soft Limit® protects against digital distortion
from clipping
• Take control with three configurable touchpads and a multifunction
controller knob
• Keep an eye on levels and settings with two full color OLED displays
• Achieve better sounding audio tracks, virtual instruments, and plug-ins

Comes with power adapter and USB cable.