Put in a plug for a budget-oriented, no-frills but good-quality multichannel (6 or 8ch) USB DAC, basically a follow up to the budget2ch SDAC.
^In the form of a question of course, Mr Trebeck.
There is a significant hole in the market there, though I'm not sure the market is especially large. The Grace pro-grade surround monitor controller DAC is mighty grand, as is it's cost, yet is not well-suited for prosumer/taper use even if it was more reasonably obtainable.
Tell him some tapers are doing crazy surround stuff like he does occasionally and could really make good use of it! Photo below from the Grace Design site.. I was looking for the shot of him standing in front of the Spacebar surround rig at RR with the tiny umbrellas mounted over each microphone, but couldn't find it.