Oops, I forgot that I started this thread! In any case... my Mac is a 1 GHz PowerBook Titanium, although the results are the same on any Mac, in OS 9 or X (and with at least three stereo miniplug mics I've tried over the years -- good thing Radio Shack accepts returns). I have input gain turned all the way up (+12 db) in the Sound preferance pane, as well as Audio MIDI Setup, as well as in Amadeus II when I try to record. I have to put my mouth right up to the mic (literally almost touching it with my lips) for it to pick up any sound.
Yet on a tape or minidisc recorder, this mic works fine, which was also the case for the other mics I tried.
I know a guy who has a mixer, but I'd really rather not have to mess with it -- I mainly want this for recording myself playing the piano, or other instrumental recordings. Nothing professional here, just impromptu stuff.
-birdman