Pro Tone Pedals OA77 pays homage to the late ’70s era of the Muff we all know and love- the Op Amp era.
The muff underwent a drastic redesign- the transistors were removed and replaced with operational amplifiers. These were made only briefly – a sparse 2 years.
- Authentic recreation of the late 70’s OA Big Muff
- True bypass switching
- Standard 9v center-negative operation