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Old 20th May 2019
Lives for gear

Originally Posted by morelia View Post
sorry, just want to be sure what 4CM is?
The infamous "4 cable method".
Cable 1: Guitar to multi FX device.
Cable 2: Send of MFX device loop (in case it's got one) to amp input.
Cable 3: Send of amp FX loop to MFX return.
Cable 4: Output of MFX to return of amp FX loop.

That way, you can place your MFX units FX anywhere in the signal chain. Typically, things such as drives and compressors sit in front of the amp whereas you'd place stuff such as delays and reverbs in the FX loop of an amp.
All this only works in case both the MFX unit and the amp have their own FX loop circuits.