While it has a clear (if somewhat bass-weak) sound, it's a mono mic - just one ring on the 3.5MM plug - so it's doing the (I think - not well-versed on the subject) 'right to ground' thing, resulting in audio only on the left channel. In search of a solution, I just purchased an older (late-'80s) Azden ECZ-660 'shotgun' one, with a 'zoom' pattern option. I tried one of the 'SONY' (a knock-off, I'm sure) ECM-DS70P T-shaped plug-in mics, but the 'figure 8' pattern of the mics does as good a job of picking up the (increasingly getting worse at shows) chatter in the audience as it does the stage sound - same with that internal (along with lousy dynamic range).
The internal condenser mic is pretty lame. I record live music with a small 'pocket' video camera (Kodak 'Playtouch' Zi10).