activating

  1. S

    profet 3.2 hum-sound (rauschen) if activating hicg boost

    Hallo, ich purchased a Profet 3.2 yesterday. So far really nice amp, my first brand new one... BUT, if I turn on the high boost it starts humming... and if I adjust the high button from the equilizer, it starts humming too... in middle position no sound but ich i turn it in any...
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