This amplifier from 41Hz, was one of the first "digital" amplifiers to enter the audio market. Based on Tripath chips it was a rather simple kit, though I picked the SMD version.
As it is rather efficient, I planned to run it on a 12V MC-battery, but that one got ruined before I got
around testing it all.
Just the other day I brought it up from the basement to have a look and decide howw to go further (= scrap it and throw in a new modern digital amp), but decided to fix the flaws and try it out.