Hi Petri,
It's been me who worked out the patches for mixer support on the Fast Track Ultra series some while ago. The question you asked has been asked before and I've answered it similarly before. Let' get into it:
What I expected was clear stereo/surround sound, what i got was distorted mono sound with reverb!
How do you come to expecting stereo/surround sound from a device that has 8 outputs, 8 inputs and 8 'software input' channels?
Far away from optimal settings!
Yes, that's true. But actually I don't think there is something like 'optimal settings' for this device in general since use cases differ a lot: You might look into stereo/surround, others prefer 'diagonal software only’ I for myself have completely different needs.
The only reasonable sane default I can think of is 'everything muted'. But that again wouldn't fit many expectations. (Although I would probably implement *this* default if there was a consensus on it.)
That's why I decided not to do anything with the current defaults. At least they make it *very* clear that you probably should adjust something for this device ;-)
Maybe I should add a Readme to the ALSA docs but I haven't found the time to do so.
BTW, you can save your own settings via alsactl.
Ultimately I think that anybody using this device should adjust his initial settings via a script first since it is a major pain in the ass to manually adjust all those controls.
A dedicated Fast Track Ultra mixer application could also be helpful. So if you're interested: Just start working on it.
Regards, Felix