Retro Sonic Preamp
This pedal is a faithful recreation of the original “FA-1” FET Preamp circuit. Its circuit provides the same tone as a vintage FA-1; a clean boost with the great tonal flexibility via the independent Bass, and Treble controls and bass cut switch (-6dB of low cut).
The internal DIP switches, which can be seen just in the middle of the circuit board (once back cover is removed), will add in clipping diodes to turn the boost into a “dirty” boost or mild overdrive effect. The top switch adds in the diodes, and the lower switch adds in some hi-end roll off if you find things too bright. This gives the pedal flexibility in its use, clean or dirty depending on your needs.
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