Hi i am having a similar problem, i been out and bought a full range keyboard amp because my guitar amp cant take some of the bassy sound coming from the synth side of the pedal, now i thought you could send all the synth sound out through the main out output and the guitar both normal pickup and modelling with effects out through the guitar out but cant seem to get the gr55 to do this,
this what im using and how i have got it set…
Fender roland ready strat with gk2 pickup
GR55 System/other/guitar out source/patch
GR55 Master/patch other/ guitar out source modelling
i have set a patch like this: modelling guitar through AMP and MFX what i get is modelling guitar with amp and mfx out through the main output and clean modelling guitar out of the guitar output, is this right?
Roy