I haven't seen that many posts about the Behringer UCA202.
Basically it's an AD that converts line level only to 16bit digital (toslink). The nice thing about it is the tiny footprint:
22 mm (0.87") x 88 mm (3.46") x 60 mm (2.36")
Weight approx. 0.12 kg
Powered by USB only, it could be useful for taping if it's possible to power it with a USB battery.
According to an Australian user, it contains the Burr Brown PCM2902E chip.
http://minirig.org.au/2007/10/28/inside-the-behringer-uca-202-usb-sound-card/Click on the photos for huge blowups.
Anyway, a Polish user made some serious modding to improve the noise floor, added XLR in- and outputs (and maybe some other improvements that I missed):
http://translate.google.com/translate?u=http://www.monterdiy.vel.pl/?p=120Maybe some of our Polish experts here on TS.com can elaborate?!