Projects > Hamptone HJFA Amplifier
The HJFA is a multi-purpose amplifier that takes the circuit from Hamptone’s HJFP mic preamps and removes the mic input section. Depending on the input transformer used, this board could be the foundation for a DIY mic preamp, instrument amp, or DI.

Notable Features:
- Uses Hamptone’s custom output transformer
- Suggested uses include:
- Instrument preamp
- DIs
- Line amps
- Mic Preamp
- Plate reverb pickup amp
- Leslie speaker preamp
- On board voltage regulators
- Powered by included DC wallwart
- Designed to fit in Hammond 1590B enclosure
Price: No longer available
Category: Misc Preamp Tags: