[LAU] loud noise out of external soundcard in the bandroom when AC-powered

[Matthias Schönborn]

Hey everyone,

Thanks for all the information! My soundcard has two balanced 1/4" TRS 
Outputs, and I think I'll make some TRS cables where the ground is not 
connected on one side. Does it matter if the input on the mixer are balanced 
or unbalanced? I don't know if that's the case or not because it's not my 
mixer. I'm really looking forward to eliminating this freaking noise!

Cheers
Matthias