I've browsed lots of threads on the MB2-500 but didn't see too many that compared it to the 700RB. I checked out both today and, to my ear, the 700RB sounded more defined (the MB2-500 sounded a little "muddy"). Did anyone else get this impression? On both, the EQ was set flat. I did notice some reference in the threads about some difference in the EQ on the MB2. Could this explain what I heard?