This is a basic Operation Amplifier Boost circuit designed for guitar or bass. In this circuit, the Gain is set by Rfb and Ri. Voltage Gain = 1+ (Rfb/Ri)Voltage Gain = 1+(220/100)Voltage Gain = 3.2, or 20 x log (3.2) = 10.1dB Although this circuit will work, it has...
