Really bad whine with the AX8

hippietim

Axe-Master
I was trying out my new Korg Stageman 80 last night with the AX8 and was getting some really bad whine when I connected the two.

The Korg has 4 ins - 1x XLR, 2x 1/4", 1x 1/8". If I used the 1/4" or 1/8" it was nstant whine. It didn't matter what the AX8 was set to - levels were irrelevant. XLR was fine. The Korg uses an external power supply like a laptop. I tried powering them with isolated and non-isolated outlets. No difference. Just for the heck of it, I plugged the AX8 into an Ebtech Hum Exterminator and then it was dead quiet.

http://www.ebtechaudio.com/humxdes.html

The outlet and power strip I was using are the same as when I use the AX8 with my CLR. As I type this, I think I'm going to try the AX8 1/4" out to the CLR and see if it repros.

Thoughts anyone?
 
It sounds like some sort of ground loop - There is a ground lift switch on the AX8 - You could try that as well.
 
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