I have a Marshall 3315. I also can not get the amp switch to work. It seems like it changes the channel.
Does anyone have a list of the to the of amps that wont work,
And what do you mean by short-sleeved inputs?
MPORTANT! Connect EXT AMP 1/2 only to amplifiers that utilize "shortto-sleeve" footswitch inputs. Connecting to any other sort of input could cause permanent damage to both your amp and Helix! If you're not sure if your amp has short-to-sleeve inputs, contact the manufacturer
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