I am looking for a portable USB field recorder device, which also works as an usb audio device/mic while connected to the computer, and also provides some kind of (digital) noise filter for ground noise. Couldn’t really find anything like that, but maybe I suck in googling, or the product descriptions aren’t very precise.
I think you can’t go wrong with any of the Zooms. I have the H1, but rarely used it. Problem is that the battery empties within a week even if it is off. This is normal though.
I just bought the TASCAM DR-05X and it works great both as a standalone use and as an audio interface.
The only drawback is very sensitive to microphonics, better not to touch it during recording.