An op-amp is voltage amplifier that serves a variety of purposes. In our Pedal Kits, the op-amp works in conjunction with the rectifier to shape the overdrive sound.
These low-noise op-amps simply plug into a socket soldered to the circuit board, so it's easy to swap op-amps for different sounds.
#7441: RC4558P Tube Screamer style op-amp
#7442: NE5534AP Rat Pedal style op-amp
#7443: LM833N Favored by many modern builders for its low noise and rich sounding distortion.
#7444: TL072CP Klon Centaur style op-amp
#7446: JRC4458D Original TS-808 Tube Screamer style op-amp
#7484: Socket (for 8 pin integrated circuits)
#7490: PT2399 Echo audio processor