Finished initial power up and tweaking last night on my long overdue KT88/6L6 Clementine build. I used the Edcor power trannie and Transcendar 3.5K OTs in a chassis I got last year from Keith Kirby before his passing.
Pretty standard build except I used adjustable constant current sinks for the cathodes, TL783 3 term high voltage regulators in standard CCS configuration. I used them before in an EL34 SE amp and they worked like a charm so I used them again in this build. The part I like is that once they are adjusted for a particular current you can swap tubes and not worry about the cathode resistor value. For laughs and giggles I set the current to 55ma and swapped in SED 6L6GCs and JJ KT77s in addition to the Sovtek KT88s and in each case the current held exactly the same. I put the KT88s back in and reset the current to 80ma for the listening tests in the next few days.
The frequency response fror 20 to 20k seems good with about a 0.3 volt drop in output across the spectrum. It peaks in the 1k to 5K area so listening tests should be interesting. I was measuring about 5 watts RMS max before any waveform distortion on my scope.
I will snap some pics as soon as I remember where I put my camera.
Edit: Found camera but not the battery charger for the darn battery. Hooked the amp up and played some music. Plenty of bass from the Transcendars and Kt88s. Very little hum. Might have to add a small CPU cooling fan to exhaust inside heat.