I'm really digging it now. When I got it back it was real dark sounding and a bit bland. But it has opened up and came to life. If I use the tone bypass it's a bit dark but with using the treble and bass controls and using the turnover buttons at the right time it sounds great. I've yet to try a mc cart throug the phono section but the mm is great. It really has a crazy colored background now if that makes any sence.. But I really like that. Between leaving both units on all the time this system is really shining!!! The 939 is no longer a contender. But it is a damn good amp still. But the WOPL will wipe the floor with it. Id love to try one of the spec pre's one of these days to compare. Because this 3600 is so superior to that brand new 1000$ nad pre I had for a second..