I recently got an Olympus WS-320m digital voice recorder. I've tried it with the band, but the volume tends to kick in some sort of limiter for the internal microphones, so I thought I'd get an external Microphone. but, since i read around a bit on this site it seems I might benefit from a "battery pack" or "juice box" etc.? My concern is with the microphone input on my recorder, its rated at -70 dbv??? I don't know what that means, but I assume 9v going throught the microphone (I'm thinking of gettting the sony ecm-ds-70p) into the recorder is WAY too much! or does the microphone impedence cut it down? The recorder also has a "conference" and "dictation" (lower sensitivity) modes. my band seems top play between 100 dbc (c-weighting not A) and 110 dbc. it seems from the microphone spec that it, the ECM-MD70P, should handle 110 db (I assume dba) so I should be safe, but should I get a battery pack? and do I need.... oh, I already asked that... please give me your feedback and please go easy on the newbie! thanks.