Player

I have the pitch black custom and when I use the 9v output to power my Keeley compressor it gives a high pitched sound which makes this “feature” unusable. The weird thing is that it’s been wired this way for months without problems yet today the noise started as soon as I turned on the pedalboard. I tried different cables etc but nothing helps. Very annoying.Im guessing that if I run it on batteries it will start drawing power as soon as an input jack is connected ( which is also annoying ).