I don't own the BDA-1, but I've heard it extensively. If I had the funds, I'd buy it without regret. But I own a Bryston B60, so of course I'm biased. As was mentioned earlier, the only 'out dated' thing is the USB is limited to 44.1 or something similar. Most others are too though.
If you have a local dealer and they don't have a BDA-1, ask to hear the BCD-1, as they sound very similar.
If you have a local dealer and they don't have a BDA-1, ask to hear the BCD-1, as they sound very similar.