I have similar problem. I have a Fishman microphone and transducer using the Fishman Acoustic Matrix system (they don't sell it anymore). I use a TRS cable on both ends, that goes from my acoustic guitar to a Fishman blender, where each can be adjusted for gain, treble and bass. When I use the Line 6 G10, only the transducer can be heard.
Is there anyway I can reverse that so I can hear my microphone vs. the transducer?
My thought is if I were to switch the XLR wiring which comes out of the back of the Relay G10 (re-soldering the 1 and 2 pins), would that take care of the issue?
If so, would there be any harm in doing so?
The 1/4" right angle adapter plug doesn't make any difference.
Thanks!
Jeff