MXR M87 Questions

Discussion in 'Effects [BG]' started by tobascovodka, Jun 19, 2020.

  1. tobascovodka


    May 14, 2020
    I got a MXR M87 Compressor pedal today. I hooked it up, and started playing around, trying out all the knobs. Then I hit the switch to turn off the pedal/bypass, and nothing... no sound. The spec sheet says it should be true bypass. What gives?

    Also does anyone know what the ON/OFF switch inside the pedal does? Image below
    Last edited: Jun 19, 2020
  2. tobascovodka


    May 14, 2020
  3. tobascovodka


    May 14, 2020
    Bypass started working, maybe it needed a few dozen switch clicks. The internal ON/OFF switch is still a mystery
  4. bassgus


    Feb 11, 2012
    That switch is to turn on / off the LEDs
    tobascovodka likes this.
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