check out the web site... http://www.soundsculpture.com i have one of these pups, the switchblade GL, works really well, i can program routing options via a program on my pc, and then download the layout to a patch on the unit. the routing can be really complex, too. i have a setup with multiple inputs, depending on which bass i'm using, one of which will be routed to either one of 2 preamps, or both, then, from there to an effects unit, if used, and then to the poweramp. simultaneously, i can route the outputs from my foot pedal synths and bass-synth either to my power amp or to a stereo lead for the pa. i can even route my moogerfooger pedal or other pedals into the loop, and then keep them on all the time back at my amp, away from my feet, and just have one midi pedal control when they are brought into the signal chain or not. very cool. but pricey - the one i have has 16 inputs/outputs, and it cost ~US$1750 any questions?