MXR M87 Gain and Reduction Light No turning On

Discussion in 'Effects [BG]' started by Hardbassjunkie, Apr 17, 2021.

  1. Good morning,

    Just hoping someone could help me out. I just bought an MXR M87 compressor pedal and for some reason everything seems to be working expect the gain and reduction light does not turn on.

    I have tried turning the ratio all the way up. I turned the volume of my bass up as well and nothing. I put up the attack and still nothing.

    When I turn on the pedal the lights turn on, then they turn off.
  2. CosmicRay

    CosmicRay Supporting Member

    New or used? That wasn't mentioned. If it's new, bring it back. If it's used.....hope they'll work something out.

    MYLOWFREQ Supporting Member

    May 13, 2011
    Try turning the input up as well, if that doesn't work then most likely there's an issue with your pedal. I'd return it.
    Swimming Bird likes this.
  4. Used. The guy already offered a refund
  5. RoketRdr


    Nov 7, 2019
    What he said. You've got to have the input set properly before it will act right. This pedal can take a really hot input signal. I have to set mine at about 80% on the input for it to function properly.