I was trying to track a DI guitar through my Helix when I noticed it all had a constant hum/hiss accompanying it. I use 2 XLRs so I can have one recording DI dry track and the other playing my own preset so I can hear what it might sound like with distortion. I realize I can just plug my guitar into my interface but then I can't hear with distortion since I don't own any plugins or programs for that. The hum/hiss wasn't happening a few months ago when I last did this, and I revisited that previous project (same 2 XLR setup) and there was no hum/hiss in the recording.
Current setup is Helix Floor XLR out to an interface that is plugged into my computer. Helix USB to computer is not connected. Preset is on an EMPTY PRESET. Ins/Outs on Global Settings have XLR outputs and 1/4 outputs to Line. Hum/hiss is only present when an XLR or 1/4 is going from my Helix to my interface. DAW does not have to be open for hum/hiss to be present. Hum/hiss is also present when only using headphones.
I have tried:
Using a noise gate (to the extreme)
Using different guitars plugged in, also with different cables
Unplugging the guitar input entirely
Using different XLRs
Pressing the ground/lift
Plugging the Helix into a different wall outlet
Changing interface sound settings on my computer between 1 channel/2 channels
Testing another brand's modeler (Headrush) and noticing no hum/hiss
Hum/hiss goes away when an XLR or 1/4 is not connected, but how do I stop it?
On the audio examples, ignore the low sounding hum, that is a lower string ringing, listen for the static in the first (newer) file.
HumHiss New.wav
HumHiss Old.wav
