The original transparent overdrive, this pedal has a mountain of clones, reissues and derivatives. Due to the low parts count and flexibility of the circuit it is a great starter pedal for beginners and a great way for more experienced builders to get into modifications.
A great article on this circuit can be found at premierguitar.com that was written by Brian Wampler about some of his go to mods for it.
- Output – Controls the overall output volume, this is actually quite low and unity isn’t until about 3 o’clock on the dial. Common modification is to increase the potentiometer from A10k to A100k
- Distortion – Controls the amount of clipping in the circuit. As you turn this dial up the bass will start to roll off making the highs more pronounced.
- Designed for a 125B enclosure with top-mounted jacks