If i get an SVT IV Pro and then also get a SVP-BSP. How would i hook up the BSP to to SVT IV Pro? I assume the effects return. But after i would plug it into the effects, i would plug the bass to the BSP and then would i need to plug something in to the input of the SVT IV Pro. The reason i ask all this and not just get a Poweramp for the BSP is so i can have the SVP-Pro sound and SVP-BSP sound and use the the poweramp from the IV Pro. I would only save 200 if i got both preamps and a poweramp so i'd rather use the extra 200 and go with the Ampeg Poweramp.