OK, so after getting the first one to work (the grubDAC worked on the 2nd try, had to reflow some joints the first time around, but after fixing that it was all smooth sailing
) I've now finished the second Mosfet-max. Left channel works perfectly, however the right one is giving me some issues. I think I burned out one of the Mosfets (QB9R) due to my multimeter leads not being connected right when biasing, so I replaced that, and now I'm getting some static noise on the right channel (there is sound, too, though, it's just interrupted by the static sometimes and the static's always there in the background), and the DB bias voltage on the right channel fluctuates within a margin of +-50mV. I've already replaced both MOSFETs (got that issue after replacing QB9R so I figured why not replace QB8R as well, since I had some spares) and I know for a fact that all the transistors are oriented the right way etc... could it be one of the electrolytes? (I hope not, I'd have to reorder them from beezar) Or is it one of the MOSFET solder joints (tried to redo those like 10 times, but I can't really reach them from the top on QB9R, and the grounded one on QB9R is the only one that looks a bit objectionable)?
Tube bias has been working fine since the first start-up by the way. Also, I can't take any usable pictures right now since I've lost the charger for my camera and my cellphone can't be convinced to take some sharp pics.