I examined the Schiit Bifrost's electrical performance with Stereophile's loan sample of the top-of-the-line Audio Precision SYS2722 system (see www.ap.com and the January 2008 "As We See It"). To test the USB input, I played files with Bias Peak Pro running on my MacBook Pro, using the AudioMIDI utility to make sure that the data output from the USB port had the correct sample rate and bit depth. I performed a complete set of measurements on both samples and have noted in the text where these differed.
The coaxial input of both samples locked to…