sir, I think you're not understanding the requirement.
if you plan to multitrack a drum track, i.e. 5 mics, one track for kick, one track for overheads, one track for snare, 2 tracks for the toms, all being recorded in a separate track in your software, this will be impossible to do with a 2in/2out interface.
que naka "mixing software" ka pa, it is virtually impossible kung kulang ang inputs mo sa audio interface.
the idea of using 2 audio interfaces is to get access to record different tracks in your Recording Software, not just to get more inputs.
iba yung multitracking na record, add track, punch in another take.
yup pero naka-mixer naman yun..
ibg pong sabihin.. when you have a mixer software.. you dont have to have several usb inputs.. just one lang kasi po one at a time lang ire-record ang tracks.. hence, multitrack recording
Track 1 → drumline.wav
Track 2 → bassline.wav
Track 3 → Rythmguitar.wav
Track 4 → leadguitar.wav
Track 5 → instrumentalguitar.wav
Track 6 → mainvocals.wav
Track 7 → backupvocals.wav
then after timplahin ang effects kada tracks, optimizing volumes.. it will be render as a single sound file.. of course before rendering it ise-save muna in a file para puwede balik balikan.. timplahin ulit or to have another copy kung nasira yun nauna..
now unless you really wanted to record sabay sabay.. i won't advice several usb interface.. kasi mare-record siya as a single sound file lang naman.. so walang
channel separation..
i would suggest yun naka-input sa usb guitar interface is yun output ng mixer.. kaso
line out (impedance level) ang output ng mixer.. unlike sa guitar or guitar fx na mataas (instrument level).
so not uless may switch ang input ng usb guitar interface between
"amp out or line out" walang mis match impedance..
otherwise yun output ng mixer na
XLR.. i-convert into
1/8" trs at mag input sa
line in ng soundcard.. yan match yan
line out to line inso that's how you record several instrument.. or inputs in your PC.. lalabas siya single track lang or single sound file