Late '70's/early '80's E/H Big Muff pi V6 The tone control's on/off switch didn't work so I had the only tech in Bakersfield I trust. It now has TRUE BYPASS and a functioning tone control. INCREDIBLE TONE & TRUE BYPASS. $250 picked up, Pay Pal add $5. $15 shipping in the continental USA. This+Digitech PDS 2700 Delay/Chorus-$450, $465 Pay Pal + $30 shipping in continental USA.