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Fender Bassman Super Schematic Diagram
Audio Equipment • 1970–1980 • 3 pages
AI AI Circuit Analysis — Preamp and Phase Inverter... FREE PREVIEW
This page shows the preamp and phase inverter stag...
Signal Path
The signal enters through the Normal and Bass Inst...
How It Works
The 7025 tubes amplify the input signal. The 12AT7...
Key Components
| Ref | Value | Role |
|---|
| 7025 | — | Preamp tube for initial signal amplification.... |
| 12AT7 | — | Phase inverter tube to split the signal for push-p... |
| Rk | 820 ohms | Cathode resistor for biasing the 7025 tube.... |
⚠ Repair Flags
- Ck electrolytics dry out...
- Rk drift affects bias...
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@§Wed 13 May 2026 @ 5:51pm UTC24216.73.217.125
