Fellow Pic-listers, I am on a mission to build my self a black box DAC based on the AD1955 DAC (the specs are real sweet btw!) paired with some AD797 OP-AMPS (also real sweet!). I want this Blackbox to have both high quality SPDIF and USB inputs that support up to 192Khz sampling rates a-la 24-bit sound. My problem is that I can't seem to find an USB-I2S IC that supports datarates of over 48Khz, which is a problem I am not experiencing with the SPDIF side of the story. Does anyone know of an USB sound chip that supports 24-bit sound with up to 192Khz sample rates? Google is making me dizzy! Yours truly, Sean. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist