Very Odd and OT VG-8 Question

[Kevin Cheli-Colando <billowhead@gmail.com>]

Okay, maybe the question isn't that odd but its definitely off topic.

I'm running a midi guitar to a Roland US 20 Midi selector going to a
VG8 and an Axon 100.  The issue is that the VG8 produces a very low
volume high pitched feedback when I use this connector and I'm not
sure why.  The Axon doesn't have this trouble and the VG 8 is fine
when the guitar runs directly.  Also, it doesn't matter which plug I
use (A or B), the VG8 still gets that ring-y feedback going.  The
sound itself is like there is some small bit of a signal getting
caught in a feedback loop, its quiet but noisy when I'm not playing.

Just curious if any of the guitar synth players or other geniuses here
might have a clue about this as I'm stumped.

Thanks,

Kevin

-- 
Till now you seriously considered yourself to be the body and to have a
form. That is the primal ignorance which is the root cause of all trouble.

- Ramana Maharshi (1879-1950)