Stan...

Getting back to an earlier question...DD is Direct Drive. For current questions...MC is Moving Coil and MM is Moving Magnet. An MC input will provide far more gain than an MM output because the MC input is design for cartridges that will have less than 1 mV output while the MM input is designed for cartridges that might have 4 mV output or even more. Those numbers aren't specs, just general range. MM cartridges are more common in the budget range and MC are more common in the high end.

Are you saying you have recently cleaned all the controls?