Battery powered DAC

I am on the waiting list to try this thing out. I don't like the idea that it has to turned off before it exceeds 4 hrs of playing time or each succeeding play time will be shorter. I got the Nixon DAC now and is left on all the time. Chris Own claims the Ack! to be a much better design than the Nixon DAC. It certainly looks better. We shall see.

Besides Vinnie's, I haven't read a out right positive review/impression of the Ack!. Then again, I doubt a simple non-oversampling DAC will be better than complexed upsampling or with more bits and khz in most people's systems. Best is to try it at home. Chris claimed everyone who did the home demo has kept the DAC. Then again, he sends out demo models...

Thanks for your contribution Piedpiper. May I ask what are the sonic differences you heard between the Ack and the Nixon? Which Nixon did you audition? And, briefly, what's your system like?