I already had the echo indigo DJ and I / O, having switched on mac I was looking for a firewire external interface for studio and live, with the ability to route to multiple outputs + pre-amps to plug a microphone or a guitar directly into the box.
I use a Macbook Core Duo 2GHz 2GB RAM, mainly with Ableton Live.

UTILIZATION

No installation required OS.L MAC interface is recognized a few tenths of seconds after being connected.
no power needed either ...

GETTING STARTED

With Live 6, the overall latency (input + output) is 22ms minimum (below, crackling ...).
it suits me (it was about the same with indigo), but I expected better.
Recording on track 1 + 1 score read with tons of VST.
I have not tried multi-track recording.

OVERALL OPINION

I use it for 2 weeks.
For now I appreciate the craft, although the latency Outher been lower.
I like the connectivity, ease of installation, price, and then the look of the beast.
Console MAC-OS is also very well designed.