u/Berek_Halfhand

Bought a Donner DKA- 20 “keyboard” amp from MacBid to use as a personal monitor when playing guitar. (My pedal board goes straight to PA). It has this “compress“ button the back. Other than lighting the light, it doesnt seem to do anything. I have searched all of the intertubes looking for a description or even mention, but no other DKA-20 i see anywhere has or even mentions this button. Not the official manual, no reviews, nothing.

I am flumoxed.