maiden voyage last night for jerry joseph solo at the south's chattiest bar. ran u89(hypers)>148>671(line-in)@24/48. first, let me say, this box is a frickin breeze to use. especially w/ the presets. the levels are awesome (fast/accurate). the show was short so the batts were not an issue, but ive been getting well over 4 hours testing at home. the recording is as good as can be expected considering the crap pa, the chatty drunks, and boomy room. cant wait to get this thing in a more acoustic pleasing enviroment. that said, if you are on the fence about getting a 671, DO IT! especially if you already have a fav pre. if not wait til the acm comes out and have one hell of a all-in-one box for 1/2 the price of a 722. i am ecstatic w/ the stock unit.