I'm always having massive noise on the monitor out plugs. When using my DXR-10 (see one of my other threads) this was really annoying. Fix was to use XLR cable with an adapter.
I always thought this was caused by the long cable length. Since the workaround with the XLR cable/adapter was ok (not great though) I forgot about it.
Now...I got a new audio interface and started recording of multiple Kemper outputs simultaneously (Main out, monitor out, direct out) just for fun.
Even then I have massive noise on the monitor out using a 50cm cable. Main out and direct out are absolutely noise free.
So I wonder if:
-there is a problem with my Kemper and the monitor outs or
-if there is some nasty hidden setting I need to tweak
Looking forward to your experiences and tips!
P.S. I had the noise with all firmware versions
