Hi Ralf,
if possible
[snip] channel adjusting via alsa mixer
For the Focusrite Scarlett 18i20 2nd Gen alsamixer provides
no channel faders. IMO this isn't a disadvantage. A disadvantage are
missing routing settings. Fortunately the Focusrite has got no
monitoring routing by default, so it works without issues, if latency
doesn't matter or when using a mixing console for monitoring.
While the device has hardware gain knobs, ALSA volume control seems for
me not neccessary. I think, the base routing is possible thru jackd. So
it could be a good choice.
Thanx