I just installed a Ortofon MC 10 cartridge on one of my TT's. HOW do I get rid of that Hummm, or is this just one of the things you get used to with MC? I tried the TT grounded and ungrounded, grounded is better. Tried reversing the power cord, no change. Output voltage at 1000Hz is 0.1, now that's low. So that's my question, is the hum typical???