ht dual went back

[ck]

brought my ht dual back.i found the sound to be good but i think it was to noisy.every time i wasn't playing i got too much hum.and when i touched the metal valve cover the hum went away.i think it went microphonic or a grounding issue.also i like to gain stack my pedals.blackstar should have put a switch so you could run both od/ds together(just my 2 cents).ended up with digitech hardwire valve od. and valve ds.much quieter and more options.