It is
possible to make an excellent sounding recording with it (in the right circumstances) as Dogmusic has done, but there are so many better choices out there. There is a reason why very few regular taperssection contributors use one as their main recorder.
The built in mics are quite good, but otherwise it sucks. It's faults are too numerous to mention, particularly for stealth recording. The pres are not quiet, it will distort at very high sound pressure levels, and it's not at all intuitive to use among its myriad of other problems. The tone Dogmusic mentioned occurs whether phantom power is on or off. And apart from the tone, the preamps when fed by phantom power are quite noisy with many (most?) mics.
Worst money I ever spend on taping equipment. Want to buy mine?
Read guysonics review:
http://www.sonicstudios.com/zoomh4rv.htmLook for this line in the review:
However, the limited high frequency bandwidth (which was measured several times because I couldn't believe it to be that bad) was the showstopper removing any hope of serious use as a recorder.