Between two outputs.
I use it for everything and especially for the creation electro music.
Mac OS X and iMac G4 800.
With guitar, microphone, and electro stuff.
Inputs and outputs of good quality, excellent preamp.

UTILIZATION

Installation PERFECT.
No incompatibility.
Gnial config: everything is on the case or so.
Construction of super quality: the knob, or must, choose the frequency of live recording, volume control ... Etc ... is great art.
Manual clear.

GETTING STARTED

Drivers NICKELS.
Missing a MAJ to OSX in the end, but it's not serious trs.
Latency excellent, super compensation hardware.
All can run simultaneously inputs and outputs at the same time on the amp or headphones (against the duo m-audio) and the sound is good gnialement.
Preamp effective.
The excellent stuff.

OVERALL OPINION

I recently gniale its design, and look trs pro.
I had had before the M-AUDIO DUO which is a bad memory for me.
The report made quality is excellent.
The construction is superb.
The sound is good trs.
The settings are right on the box so more problems.
The converters are l and are good.
Connectors numbers (digital too).
Excellent, full of stuff from the fire of God for what they spineless card effective for long.
I advice EVERYONE A because it is really, really really good.