Vanark, thank you. Problem solved. It was in fact the Y-adapter. After purchasing the correct adaptor today, I set everything up when I got home from work and we have lift-off. Everything is working fine. So relieved. The thought of having to send the M10 back to Sony was not something I was looking forward to. I already had to resort to using the internal mics once and while the results were significantly better than I ever expected, I don't intend on using them again, except in an absolute pinch. Plus i really want tomorrow's test run to be with the Nak 300s as for the forseeable future this will be my rig and I'd like to work all the kinks out before I run it at the Bob Weir show in Asbury Park, NJ on June 8.