Helix issue..

bloodandtears

What would cause this noise.. I assume it's the Helix not the Mooer Baby Bomb.

https://drive.google.com/file/d/1tIhQWFU1F40o7BPJYIde_wR9bG1ShCLv/view?usp=sharing

A process of elimination will prove that of course...

John_A

It's the combination of both, mine does exactly the same.  The baby bomb doesn't do it with my fly rig, and the Helix is fine with other power amps.  It's possibly the power supply on the BB that's the issue.  I've recently bought an Orchid audio isolator to see if that fixes it, but haven't tried it yet

Think it's something to do with a ground loop as if I go via a DI box it does the same until I turn on the ground lift then it's fine.  Trouble is the DI box drops the level too much.

Will report back on the audio isolator