Thanks Dave !!! I have a couple more questions for ya... are the presets on the various rack units changed via midi or do they remain constant on one preset , and is it possible to build a rig like this using a Rocktron/ Bradshaw RSB 18R and RSB 18F BEFORE the amp's input ? I've been told that the 18R doesn't like to "see" a guitar level signal...that it's only good for preamp / line level signals. Is there a way to modify the unit or use a buffer / preamp before it to match impedence and / or levels ? I WANT A RIG LIKE THIS !!!