I used 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 measure the MSB Diamond DAC IV; for some tests, I also used my vintage Audio Precision System One Dual Domain.
The MSB combination offers a bewildering number of playback options, with three different flavors of digital data input (USB, AES/EBU and S/PDIF, and MSB Network), four reconstruction filters, two choices of upsampling, and both balanced and unbalanced outputs. I started my testing, therefore, with the more…