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Helix ground noise - MIDI switching vs. hum destroyer


BoogieV
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Hi all, 

 

I had the opportunity to try out a Helix LT in 4cm with my amp today and am very impressed with it. Unfortunately a noticeable (but expected) ground hum was present, especially on higher gain settings. This became more apparent when I used the 1/4" ext amp for amp channel control. 

 

Before I pull the trigger on the Helix I want to know that I can minimise this noise at least to a manageable level. Will using a midi controlled switcher as opposed  to the ext amp output eliminate some of noise? Or am I better off with a hum destroyer (ebtech/radial etc)? 

 

Any advice is greatly appreciated. 

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