Overdrive Preamp 250
$150.00
Overdrive Preamp 250 circuit (grey version) built for myself, January 2026. Etched PCB, NOS TI 741, Nichicon electrolytic capacitors, "greenie" film capacitors, carbon film resistors, Vishay diodes, Alpha and Mammoth potentiometers, and green LED. External 9v supply only, center negative. Hammond 1590P1 enclosure finished in hammered copper with velcro installed.
