Hi guys, I switched from SABDDI to RBI yesterday and my system, i.e. the RBI(?) is producing a lot of hiss now. Nothing else has changed than the preamp. However, I've always used Phonic XP2000 (bridged to 1980W) as a power amp with the SABDDI and with this set up the poweramp gain has been half way up. With the RBI, I get the same volume level with the poweramp gain only 1/4 way up. Obviously the RBI packs more punch but it shouldn't hiss like hell - should it? Anyone?