Just wanted to report that I had a chance to spend a couple of hours listening to the most current pre-production version (V4) of the BH DAC board at my house this past Saturday when John Swenson came up to visit and test various things out in my system. Mostly we were experimenting with some DSD-only DAC prototypes fed by Audirvana Plus or HQ Player, but we also spent time enjoying the BH DAC (powered by my UpTone JS-2 choke-filtered LPS). It functioned perfectly, and we listened to a wider array of tracks than we had time during the prior session (the one where we tuned the SRC filters for loading into the FPGA).
It sounded glorious! Much better than I remembered. My system has improved some since last time (Swenson designed Linear Fan Controller in my new 2012 i7 Mac mini; Supra USB cable driving the BH, etc.), so that might account for it. Every genre: jazz, classical, folk, rock--subtle or bombastic--rendered in perfect proportion, with detail, tactile musicality, and emotion.
When Doc and company get this baby into production you will be hard pressed to match this sound for anywhere near the price.
Cheers,
Alex Crespi
UpTone Audio LLC
Mariposa, California