Bottom line, it works! Price is a little high considering you can get a firewire 4 channel box for $80 less at the same store (guitar center).
The switches I used on the back were: Advance:
off, sample rate:
44.1 (I've read higher won't work anyways in Linux), Limiter:
off, +48V
off (although neither should affect the unit's ability to playback.)
The playback is astoundingly clear. The unit was picked up by the USB stack and initialized, and xmms was able to play back by enabling "software mixer", and in the device, using hw:2 (not hw:2,0 as it defaults to!). Amarok with the Xine engine plays it back beautfully using the same settings as xmms.
There are no software mixer controls for this sound card. So you'll need to use software volume control, or the front-panel controls on the unit, the latter was sufficient for me.
See page here.
Also, I recall that the first time I plugged it in, it was correctly picked up, but there was some bug that caused me to have to rmmod the usb sound modules and plug it in again.
By that same token, I think disconnecting the card has issues in Fedora, but I'm sure that could be fixed with a custom hotplug event.
The CPU load is negligible on my T40, and no stutters so far. Though I've heard buffer tweaking is required in Jack.
This link as more info.
What little recording I've tested in Audacity yielded a pretty good sound. I've read reports of a sharp peak at 12Khz when recording using phantom power on the mic pres, but I have no way to verify that.
I also haven't tested the digital I/O.
All aside, for being a bus-powered 2-channel sound card, it does all that's advertised. I've heard MIDI doesn't work, but I can't speak to the efficacy of that. All in all I give it an 8 out of 10, primarily because of expense and the possibility of not being able to use MIDI.
