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Thread: Vintage Electro-Harmonic Big Muff pedal Questions :)

  1. #1
    Forum Member
    Join Date
    Apr 2018

    Vintage Electro-Harmonic Big Muff pedal Questions :)

    Hey! I just got this amazing vintage Electro-Harmonic Big Muff pedal at a thrift store very cheap. I had three questions about this neat pedal. (Photos attached)

    The first question is, what year is this pedal? The front says Made in NYC USA. I do not see any serial or model numbers anywhere on the pedal itself. The potentiometer has the following letters/numbers on it: P0150 and 1378005

    The second question is, do I need to replace any of the caps on this unit before turning it on for the first time?

    The third question is, where do I find replacement case screws for this pedal? This did pedal did not come with any screws.

    Thanks a lot!






  2. #2
    Forum Member Don's Avatar
    Join Date
    Jul 2002

    Re: Vintage Electro-Harmonic Big Muff pedal Questions :)

    That's a CTS potentiometer from the 5th week of 1980. You should be fine running the pedal with the old caps in it- the voltages are low. If it's noisy it might need work.

    Very cool pedal, BTW!

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