Phooey. A tube BASS amp needs to be a general purpose power amplifier,
not a guitar amplifier. Study true classics like the Altec 260B,
1570B, Mac MI200, and other audio amplifiers using real power
tubes,211s, 811s,812s, and up-look at a Varian Eimac catalog. If it
does not have at least 1200 vdc on the plates I am not interested at
all.