An attempt at a highend SET amplifier using the interesting Svetlana SV57210 triodes. Plate load was a 20H choke, impedance matched to speaker load with a UTCLS output transformer. Plate voltage was 1000 volts and the tubes ran at a dull red plate color extremely hot. Performance was poor and the amplifier is very heavy. I never did make it work good enough to warrant keeping it as a usable home stereo amplifier so I am going to repurpose the chassis for a more sane, pushpull amplifier running beautiful vintage 1943, RCA, 1619 beampower tubes.