2 amps in the archive
The matching circuits, with the neighbouring topology choices shown for contrast.
| Circuit | Era | Output | Tubes | Phase inverter | Output-stage bias | Rectifier |
|---|---|---|---|---|---|---|
| AB763 (Super Reverb-style) | 1964–1967 | 40 W | 12AX7, 12AX7, 12AX7, 12AT7, 12AX7, 12AT7, 6L6GC, 6L6GC, GZ34 | long-tailed-pair | fixed | GZ34 |
| AB763 (Twin Reverb-style) | 1963–1967 | 85 W | 12AX7, 12AX7, 12AT7, 12AX7, 12AX7, 12AT7, 6L6GC, 6L6GC, 6L6GC, 6L6GC | long-tailed-pair | fixed | silicon full-wave |