A lot of people on the board have a W4S DAC2 as do I and I love mine. I was able to audition it at the same time as the Bryston DAC and even though Stereophile gave that DAC their product of the year award and the reviewer bought his review sample, I found the W4S DAC to be more musical than the Bryston. My aha moment came when listening to Frank Sinatra. On the Bryston, everything was clear and tonally correct, but when listening through the W4S the emotion in Frank's voice was more clearly conveyed. I talked to Ed Sargento at W4S about that he he told me that they pay great attention to micro dynamics.
Also, I found out that if you set the min volume to 0 and max volume to 70 and set the output to 60 you'll have the cleanest signal.
Once you put a balanced signal into the WA22, you'll at least double your sonic goodness.