Seeing a serious technical review of the Eigentakt amp on another site, just using the standard power supply and input buffer offered state of the art performance that surpassed what NAD was offering.
The NAD version of the same amp was noisier and had more distortion. What? Not so much that you could really hear, but...
That makes no sense and was disappointing, but, hey, it happens. I like NAD and what they are doing. I was kind of hoping that their digital amp was going to become a thing, but it didn't.
Thing is, though, that you can get guys to make you this amp for about $1K less with a pretty cool case.