A stereo modulation guitar effect has a 'second pedal' feature which is attached to the left side of the stereo modulation output, and this second pedal goes on your bassist's pedalboard, blending in with their signal. So the stereo right signal comes out of your cab, and stereo left (with big lo-cut) comes out of the bass rig, and gives a HUUUGE wide sound!!!!
The second pedal would be fairly simple, quite cheap.
What do you think?!!!
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