Sorry for not providing the link but that is the one I was thinking of. I've never actually used one but a good friend whose ears I trust recommended it to me. If you have the money, here are two more options. On the high end, the Apogee Mini-me would be the other USB sound card with mic input I would recommend. The Apogee converters are top of the line and the Mini-me is a solid little device that I have used to record classical music. Here's a link:
http://www.fullcompass.com/product/245288.html If you're looking for a solid, USB microphone preamp/converter, right in the middle of those two is the Sound Devices USBpre. I own one of these and it is built like a tank and sounds pretty clean too. Here's the link:
http://www.bhphotovideo.com/c/product/292993-REG/Sound_Devices_USBPRE15_USBPre_Version_1_5_.html I was very suprised at the poor build quality from the Lexicon when I opened it up. It's the type of box that just tries to do almost too much for the money. The Lexicon name is on it more for the reverb plug-in it comes with than anything else.