quick question out of sheer curiosity the aggie site is still off and i cant call em till teusday so i'll ask here for no other reason than to find out fast because i hate to wait the aggie literature says the bass and treble controls on the 680 preamp are boost/cut when i played one a few days ago (while really trying out an ag 500) i noticed that the bass and treble controls on the 680 don't have center detents like they do on all other aguilar amps and on the 1 space unit (659?). they felt similar to the knobs on the outboard preamp. It aslo sounded to me like they were only boosting. so if anyone really knows, are they really boost only? or was it just my imagination?