this really is the most versatile pre amp , it remembers all the volumes for each channel if you leave it on all the time as i do . very useful , the remote is superb and one of the best . i use the vbs1 version [ needs a separate psu] and its very good . this one does not need a separate psu and really is a very good pre amp . with xlr outputs and 200 volume control increments it is very accurate to control volume . they are sadly no longer made so grab this one soon at this excellent price . it has home theatre bypass too