On November 4, 2015 at 13:35, Brad Humphrey said...
It would have been great if the original poster would have followed up, to let us know what he found or did to solve the issue.
My money is on the Niles amplifiers. I don't like them and I bet the original poster solved his problems by swapping them out.
Two identical Niles setups. No one else has seen it with any other outboard amp. Problems with that one amp, but I just wonder what technically could cause it.