What 8-channel DAC's are available suitable for active speaker setup as of September 2022

For high performance applications:
MOTU: Ultralite mk5
But for something a bit less expensive, I strongly recommend that you look at the:
Behringer UMC1820
I have both and they're excellent, but few of the hairshirt brigade will use them as they're too easy, commercially available and don't require the massive amount of effort to get no improvement in SQ than many of the other approaches involve. Plus, no name cache.