my K1k amp, caseless atm
to get an idea of its size, inside the K1k's (K1k's modded with silver cable)
this thing is as minimalistic as it gets, and man does it sound good!!!
in each channel its basically just a BurrBrown OPA548 and four resistors... and then for the whole deal a TLE rail splitter and two caps as power filter caps (one for + and one for -) and a heatsink i pulled out of a busted comptuer PSU... they dont get hot at all, the heatsink feels maybe one or two degrees above room temp directly behind the OPA548's
here is the schematic even tho it isnt anything groundbreaking lol...
im still tweaking the circuit, and im thinking about perhaps getting some PCB's printed and selling them as a portable K1k amp if there is any interest... dunno