Hi Sean. I had a GFP-750 a while back that I used for a combo music/HT system. For the price, I thought it was a very good preamp for an AV setup and, in passive mode, was even surprisingly good for 2-channel music. As I recall, the SSP loop in the 750 is a true bypass circuit in that it completely bypasses the Adcom volume/gain control. Thus, the surround processor controls the volume for the main speakers as well as the center and surrounds. I never had to adjust both volume controls. Don