Music Hall MMF-5: laid back sound?

I just got my first "real" turntable, a Music Hall MMF-5. The image stability, channel separation, soundstaging and lack of noise are leagues beyond anything I've encountered in my experiences with older direct-drive tables and lesser belt driven designs. I'm feeling, however, that the dynamics are a little reigned in with the MMF-5, and the bass is a bit mushy. The cart is the stock Goldring 1012 and it was set up by a local analog guru who's done right by me in setting up other tables. I replaced the rubber feet with BDR cones (3 of 'em) and have the table leveled on a granite platform which is spiked to the floor, so I don't think isolation is (exclusively) the issue. I also replaced the stock felt mat with a Herbie's Way Excellent mat. I considered rolling the Amperex orange globe 6922s in my phono stage (modified Moscode Super It, pretty sweet!) for something a little livelier, like maybe new tubes from Electro Harmonix, but that's getting into the whole tone-control trip. I already have very transparent cables in the chain (Audio Art IC3, see my review), and my current setup of an ATI 1502, passive pre and Dynaudio 50s should let all the good stuff through, so maybe this is just the character of the table. Is there something else I can do here, or should I look at a Rega for more snap and tighter bass?