Well, I finally finished my Mint...
I'd originally planned on some sort of wall wart, but in the end decided to go with battery power. I also added a ground channel, with the implementation pulled directly from the Pimeta design. I guess this makes the design more Pimeta than Mint...sort of a hybrid.
Component choices:
OPA627 for all three channels
BUF634 for all three channels, double-stacked on left/right channels
1000uf 25V Black Gates in the power supply
1uf Wima input caps
Alps Blue
Neutrik locking 1/4" jack
Cardas RCA's
Silver wire (0.80mm) with teflon tubing in the signal path
CRD's for biasing
Vishay-Dale resistors
Decided on a red LED...it just looked better with my enclosure.
Wiring was a chore, I must say...next time I'll buy PCB's. That said, I lucked out & wired it all up right the first time. The amp worked on the first power-up, but I encountered some ground buzz/hum. This ended up being a combination of poor interconnects & my failure to properly tighten the nuts on the backs of the RCA's. Once this was corrected, the amp ran fine.
Pics:
I'll be interested to see what kind of battery life this thing gets...I'm kinda worried! I may yet end up adding some sort of AC supply, but we'll see.
Lastly, I wanted say thanks to the folks who helped with my questions in other threads.
Peace,
Graz