MarkWys62 Posted February 27, 2023 Share Posted February 27, 2023 Hi, I just picked up a HX Stomp. One issue that's bugging me. Stand alone, plugged into my amps, everything's nice and quiet. When I attached other pedals, still nice and quiet. No excess hum or noise on the amps. When I'm connected to the PC I get a hum on one amp, and a hissing on the other. No noise on the headphones (perfectly clean). Any ideas? Is it grounding? Thanks Quote Link to comment Share on other sites More sharing options...
silverhead Posted February 27, 2023 Share Posted February 27, 2023 Yes, it is a power supply issue, likely grounding. You can try plugging the Stomp and PC into different circuits in your household wiring. You can also try different USB ports on your computer. You can buy a hum-eliminator device. You can use a desktop rather than laptop PC. Quote Link to comment Share on other sites More sharing options...
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