drdog Posted May 1, 2018 Share Posted May 1, 2018 When I use the california treadplate amp on the hd400 the volume keeps swaying up and down but only with that amp. I have tried with all other effects off but it keeps swaying. Why is that? Quote Link to comment Share on other sites More sharing options...
spaceatl Posted May 1, 2018 Share Posted May 1, 2018 Dime all of the knobs on the HD400 and recall the patch...You might be getting some knob jitter which can cause things like that to happen...Common problem on Line 6 modelers since the beginning. Good Luck! Quote Link to comment Share on other sites More sharing options...
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