Altec 458A Tube Preamp Module Tested Works
- This preamp is in very good working condition
- The audio path is clean and quiet, free from distortion, hiss, hum, and crackle
- Both 12AY7 tubes test well for gain and emissions
- The input pins are clean and make excellent electrical contact
- The electrolytic capacitor can is original
- Serial #2022
- Made in USA
- Circuit Info:
- Test Conditions: 1VAC 60Hz Sine Signal at input transformer primary should produce ~15VAC at secondary; 1VAC 60Hz Sine Signal at output transformer secondary should produce ~6VAC at primary
- Input and output transformers pass
- The circuit is all-original
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 | 10 years ago |
|---|---|
| Condition | Very Good (Used) Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more |
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