I've recently bought a Panasonic NV-GS230 because I wanted a cheap camera that I could plug an external mic into. But when I plug a mic in, the recording level is set way too loud. I've tried a few different mics through a mixer (XENYX 1202) but however I adjust the levels on the mixer, the recording level on the camera is set too loud, which picks up a lot of hiss and extraneous noise. I need to use a mixer because the mics I have need phantom power. So I guess my question is, is there a way to adjust the recording level on this camera? I can't find anything in the manual.