ELECTRO HARMONIX BIG MUFF Pi (1978) original but these are no longer

but these are no longer present

This can get properly gnarly when pushed into distortion at slow speed - it should be noted that at the slowest speeds very little fidelity or feedback happens - this is for special effects only rather than regular use

Freshly serviced

original undamaged Greenbacks dated Jun 8th/9th 1966

ELECTRO HARMONIX BIG MUFF Pi (1978) original but these are no longerOffered for sale is this amazing vintage EH Big Muff Pi pedal in perfect working order. This is version 4 of the Op Amp Big Muffs with the EH1322 board Smashing Pumpkins' Billy Corgan famously used a v4 Op Amp Big Muff the pot codes are 1978 making this little beauty over 30 years old. It has very few scuffs and scratches for a 36 year old pedal (see detailed photos below). Mojo aplenty, made in USA, built like a tank and sounding fantastic. Sonically