option 1: sony ecm-719 on MIC-in is OK also for loud shows with mic-sens low WITHOUT a bbox!
option 2: ie. church cardioids + bbox on line-in
option 3: ie. church cardioids + preamp on line-in
as the threadstarter does NOT have mic-in on his recorder, I would suggest option 2 or 3.
of course any other electret condenser mic from soundprofessional or microphonemadness etc. can be used as well for option 2 and 3.
sony mics on line-in =>forget it
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the ebay-seller should have stated "MIC-in ONLY"...but he didn´t.