I just got a 4003 (2015) and put the Tubeampology bezel on it. I went from "why do people like these" to "really nice, playable bass" in short order. Now I am going to check out the Rick-o-sound stereo feature, but I am only looking to add effects to the treble pickup in order to preserve the bottom, as some effects I have tried kill the low end. What I am asking here is can I run the signal signals, clean and altered into the same amp through two different inputs?