Have a look at Schiit Audio Yggdrasil. It's based on (current) multi-bit DAC chip, so similar approach to nDAC in some ways. Relatively cheap and upgradeable. If you get lucky you might even find it in black.
From my side, I am hoping for nDAC + NAC in one box, but not really holding my breath! I know that some Chord items perform this function, but I am also not touching them due to aesthetics!