I have one. It works fine -- even at 24bit. Just make sure you access it directly, and not through Microsoft Sound Mapper. Also, the switch to set it to line or microphone input is counter-intuitive. Push the switch toward the Mike symbol to get line-in, and toward the headphone/speaker jack to get microphone-in. For some reason, my computer seems to recognize it more consistently if I plug it into the USB port AFTER the computer is running.
It uses 1/8" jacks and is a bit noisy, so I wouldn't use it for music or critical recording. But, for dialogue and other uses, it's surprisingly O.K. for such a cheap device.
Also, when connect a line device to this, isn't it true that it pads it down to mic level and then re-amplifies it? Also, for line input, does it support stereo?
It also works great for listening to a laptop with headphones. My laptop's headphone output is a veritable zoo of clicks, hisses, and other critters. I guess it's hard to shield against stuff running in the GHz range just a few cm away.
I went back and looked at the material I read two years ago. It is the microphone input that is mono. The line input is stereo. I could not confirm through Griffin, but I did read again, on several posts, that the line level is attenuated to mic levels, and then re-amplified, hence the noise issues.
John, the Imic I have here has a stereo mic input.
The noise level on mic is about -60db, which is good enough for a lot of things as long as you keep your levels up.
The switch on the side of the unit is just a pad. Line-in or mic-in uses the same miniplug socket. I scratched an L and an M into the clear plastic to keep track of the switch position.