Second the motion for hanging in there for the SinglePower. I'm using the MPX3 and ordered it with dual RCA output jacks from Mikael (used demo). I use it as my main stereo preamp and bi-amp with it when not using my 650's.
Many adapter sockets available for both the driver and output locations ($100 ea.). Neat thing: Its'single driver tube has noticebly more effect on the the unit's character than the changing of the two output tubes. Something to think about if you run into more exotic stuff as you only need to purchase 1 to get the real flavor of the tube.
FYI, the MPX3 uses the 6SN7 in all three tube positions in it's standard form (no adapters).
Many adapter sockets available for both the driver and output locations ($100 ea.). Neat thing: Its'single driver tube has noticebly more effect on the the unit's character than the changing of the two output tubes. Something to think about if you run into more exotic stuff as you only need to purchase 1 to get the real flavor of the tube.
FYI, the MPX3 uses the 6SN7 in all three tube positions in it's standard form (no adapters).