1974 Marshall JMP 1992 Super Bass 2-Channel 100-Watt Guitar / Bass Amp Head w/ Mods
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Vintage 1974 Marshall Super Bass 100W Guitar Head. Was recently serviced by Long Island Sounds with new JJ EL34 tubes and filter capacitors. The amp has the following modifications:
- Shared/Split V1 Cathode Switch
- 330uF V2 Bypass Capacitor Switch
- .68uF V2 Bypass Capacitor Switch
- Lead/Bass Tone Stack Switch
- Depth Control (Active via Push-Pull Potentiometer on rear panel)
- Volume II Bright Capacitor (Active via Push-Pull Potentiometer on Treble Control)
When all toggle switches are in the down position and push-pull potentiometers are not active, the circuit is a stock 1992 Super Bass. The modifications installed can transform the amp into a 1959 Super Lead when active. Amp is currently biased at 34mA with a plate voltage of 472V. We have also added rivet-nuts to make maintenance on the amp easier in the future. Please message with any questions.
This item is sold As-Described
This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.
| Listed | 4 months ago |
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| Condition | Good (Used) Good condition items function properly but may exhibit some wear and tear.Learn more |
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