i just purchased the tc helicon voice works (blue rack mount) and im having some trouble connecting it to my preamp (presonus eureka rack mount). i was wondering if i could connect my mic to the preamp and the preamp to the tc helicon. edit: ok, so i stopped by guitar center today to ask them how to set up my tc helicon and this is what they've told me; use a 1/4 cable wire and connect that from the line input of the tc helicon into the line input of the preamp. connect a dual 1/4 cable wire into the balanced outputs (LEFT/Right) of the tc helicon and into the presonus firebox audio interface 3 / 4. guess what? it still does not work. edit: i figured that line in doesnt go into line in. so i switched from line in to line out. but still no success.