The article is a getting on a bit now but I thought it was worth sharing again.
Convincing arguments for 44.1/16 being sufficient---even optimal---for playback.
AMB says one S22 per B22 board for speakers (regardless of 2 or 4 board). Deviate from that and you'll be deviating from the official word. Anyway, 50 W into 8 ohms would imply a current of over 6 A, which is going to dissipate far too much heat in the MOSFETs for the stock heatsinks. You should make a thread on the AMB forum and TK will go over the calculations with you. Offboard heatsinks will be needed, negating some of the gains from cheaping out on the PS.
DefQon is wrong in his assumption. Assuming you live somewhere with a 115 V mains supply you want to wire the primaries in parallel (BLU and VIO live, GRY and BRN neutral). Not 100% sure on the secondaries ...
Come on wakibaki you know the answer to this. It's 128 dB monophonic, but this is a balanced DAC chip. The opamp afterwards acts as an unbalanced-balanced converter, giving you better SNR than just taking half the output alone.
Can't believe nobody has suggested the AMB designs yet.
I've got a gamma 2 and it's brilliant, technically and acoustically. I bought mine assembled for $200 and don't plan to ever replace it.