Hey Bob,
I was on the waiting list for a demo of the dAck! but think they forgot about me. So far, what is your experience with the DAC? My biggest reservation regarding a battery powered DAC is that I leave my system on 24/7. Do you think it as an inconveniece?
I am using the Nixon, and it also has a lot of the attributes that some people who own the dAck! has described on AudioAsylum and AudioCircle. So, I wonder how much of the dAck!'s magic is due to the lack of digital filters or the lack of AC added pollutants.
The dAck! certainly is prettier. I heard Dusty at CI Audio is making a variety of a nonOS DAC too.