[Omegaman]

Andy,
I haven't particularly written anything up about it. Here's some details in brief.
The circuit is basically five Ampeg SVTs with the outputs paralleled into one transformer. There's five preamps and five phase splitters. Runs AB2. 700V on the anodes and 300V on the screens. The power supply is regulated and fully variable and is capable of 1kV at 3A. There's 3 massive IGBTs under the heatsink.
I used 22 Ohm 1W carbon resistors in each of the anode caps and with the mess of anode wiring on top, it's rock steady with no instability at all.
It drives four, 4X18 speaker cabs for bass on a Reggae sound system. Stand in front of those and it'll shake your spleen off its mountings....