Based on the Early 70's Colorsound power booster, this Lab #23 will also include a main master volume for the pedal into a classic 125B sized enclosure.
Perfect preamp-boost-EQ for a crunchy amp. Treble and Bass knobs are very reactive and Gain can go completely wild.
Power consumption : 13mA
Voltage : 9Vdc center negative only. Anything higher will blow some capacitors.