you can not tape a show with the mic in. use the line in
The old MD units overloaded easily, but with the new HiMD recorders mic-in will probably work.
Hit pause-record.
Enter menu, choose Rec-set, mic sens, LO SENS (this setting holds for all future use)
Enter menu, choose Rec-set, Level, MANUAL (you have to do this each time you record, enter pause-record mode)
Watch the levels, you can adjust them during recording too.
By the way, the Mic input is OK, but not great. If you've got the volume (or a good external preamp) definitely go line in. But mic in is quite useable IMO.
Richard