Just for fun, I was browsing the specs of a few "high-end" Roon Ready DACs. It turns out many of them are limited at PCM 24/192 and/or DSD64
over network. Why is that?
@NYfan2 the OP was about over network . Most DAC's support a local USB connection of very high bitrates . so thats not the question
Then it must clearly be the streamer implementation inside these DAC's .
* Limitations of the streamer software and DAC mfg is bad at software and do not supply this themselves it is some app they like and they bundle that .
* Limitations in Linux ?
* Limitations in RaspberryPi hardware which is the base of many streamers , they all have USB problems for example.
* A wellt hougth of tradeoff ! hogging the network with to large streams may cause reliability issuses for many customers that do not have the latest in network tech, so it is sane imho to let the server for example roon downsample on the fly . As there is no downside your server would hardly notice and soundqality will not change . Flaky network behavior can doom a product a mfg will not go there.
Work around build a roon player in small computer like an intel NUC connect the DAC via USB .
So if you really want to keep the original very fast rate its a two part solution a roon endpiont buildt from computer hardware with good USB spec and then a modern DAC with good USB implementation.
I was earlier suggesting that this may be wild goose chase and really a no problem

I was just questioning OP assessment that there is a problem to be solved . If it easy go for it , but to much hassle and money into it for not much return ? it was no ill intent.