Vintage API 500 Preamp Bundle – M.A.P. AML-27 + (2) Melcor AM-27 w/ GAR 1731 – Radial Workhorse Cube
Up for sale is a unique, compact, and great-sounding vintage high-end preamp rig, adapted to API 500 format and installed in a Radial Workhorse Cube.
Included:
- (1) M.A.P. AML-27 preamp (original output transformer and op amp + UTC O-9 input transformer)
- (2) Melcor AM-27 preamps (original transformers + GAR 1731 replacement op amps)
- Radial Workhorse Cube 3-slot 500 series lunchbox
These circuits are widely considered to be precursors to the classic API 312 preamp design, sharing a very similar discrete op-amp, and transformer-balanced circuit that helped define the punchy, forward “API sound.”
All three preamps have been professionally converted to API 500 series format, making them far more usable in a modern workflow.
All modules feature:
- Input pad
- Phantom power
- Polarity (phase) switch
- Direct input (DI)
- Output level control (variable)
Control differences:
- M.A.P. AML-27: stepped gain control
- Melcor AM-27s: continuously variable gain controls
Everything is in excellent working condition and ready to use.
| Listed | 6 months ago |
|---|---|
| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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