That is perfectly awesome (that the free M-520 works)…awesome!!
I love “Sound City.”
Hey on the source for the tuner input, honestly I’d put it on a patchbay if you have an open jack set…just temporarily patch from your source channel to the tuner input. Otherwise you’d have to use one of your PGM groups or an AUX buss. Those are the only busses that can source any of the 20 inputs.
I have one it’s wired into channel 1 which I use for a direct guitar input that can be routed to whatever tape track I choose.
All good ideas. I do have extra patchbay connections, I’ll use one. Thanks!I don’t “output” signal from the M520.
Guitar into tuner, tuner output into M520.