Hartke HA3500 EQ Issues

Discussion in 'Amps and Cabs [BG]' started by stamminen, Apr 26, 2017.

  1. stamminen


    Feb 10, 2016
    So I had a Hartke HA3500 and the new buyer just messaged me stating that when the EQ is engaged there is a loud pop sound, a significant decrease in power and hum noise coming from the amp.

    When the graphic EQ is not used the amp functions as normal.

    Anyone had issues with this and have potential remedies?
  2. Dogsofwar


    May 3, 2011
    Yep... I have the same problem. Seems like, this is a Hartke weakness :(
    Do you have any solution found?
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