Now watch out and learn TC Electronic - Fractal does the G-System the right way, even if the processing unit can't be used separately from the board. I'm sure there are several "Hum-Buster" I/O paths in there for true silent 4CM setups and the manual will be describe them perfectly (as the G-System also would have IF written the right way in their manual.....stupid, but true).Noneless to say, the FX-quality would be top notch here too!Just effects. Specifically designed for 4CM with dedicated pre- and post- paths. Up to 8 simultaneous effects. Any number assignable pre/post. Any combination of series or parallel routing. Two expression pedal inputs, four relay outputs. USB for remote editing with free FX8-Edit software. Silent Switch technology from the MFC Mark III. True Bypass. Etc., etc. Don't drop it on your foot.
realistically it should sit price wise between a Line 6 M13 and The G-System (499 -1299)i say... 599,-