I need an audio amplifier board with step volume control like PAM8803, but is it possible to have a solution for PAM8403?

Question

Do it yourself

I want to amplify the sound coming to AUX through the "box with buttons" (in general, there is already a box). I looked at an amplifier based on PAM8803 here I settled
on this one for now.
But this big one is very good
. In general, even budget ones based on PAM8403 would suit me if I screwed a digital volume control to them (as I understand it, a potentiometer) Will
these fit? one , two
This has already been done - just it's not clear why he needs USB
Maybe someone will advise something better and more interesting in the same price range?
Interested in small amplifier boards with volume control buttons in the same price range, or the stepped adjustment boards themselves.

Answer 1

only it is not clear why he needs USB

device input (not analogue)