@asw NAD, Bluesound, and PSB Speakers are all part of the Lenbrook Group head quartered in Pickering, Ontario, Canada. The product you are thinking of is the NAD C658, which is a DAC, preamp, and network player, which among other things features Dirac Live room correction.
Sort of like a Bluesound Node 2i on steroids; but unlike the Node 2i, without to my knowledge digital outputs. I've read about it, but have no personal experience with it. A couple years ago, I considered it, but settled on a Chord Qutest. I've been a BluOS user since 2014, and have 4 pieces of Bluesound kit in the house.