The Retro-Sonic Preamp is a faithful recreation of the original “FA-1” FET Preamp circuit. It 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). Being a ground-up build rather than a modified pedal has allowed us to provide some feature benefits up front. It is built using metal film resistors, film capacitors, and uses a double-sided circuit board for noise free operation. 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.
All Retro-Sonic Pedals