redbelo Posted March 13, 2019 Share Posted March 13, 2019 I have the helix on a not so large room, with 2 tube amp on clean , in stereo, I am going from the helix to the amp from the left and right instrument cable output on the helix , NOT the 4 cables Method, and I have this electrical HUMM, that is quite common when you hook two tube amps, with a digital moduler in between, is not so loud , but for prolonged playing time, it builds up on the ear becoming very annoying . so far I tried the ground lift on the back and doesn't help, maybe anyone know a trick or a sort of buffer or a magic pedal that isolates the amps from the electrical current that is creating the noise? Quote Link to comment Share on other sites More sharing options...
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