Home › Forums › Products › Stompboxes › Pitchfactor produces loud hum when running in stereo on two Vox AC30 amps › Reply To: Pitchfactor produces loud hum when running in stereo on two Vox AC30 amps
August 9, 2010 at 4:36 pm #131824
You are right that the PitchFactor power supply has no ground. However, in the setup you described the ground would be shared via the instrument cables between the PitchFactor and the two amps. A simple test might be to unplug the instrument cable from one of the amps and see if the hum goes away.