Are USB-SPDIF's relevant with today's DAC USB technology?


I'm using a PS Audio Digital Link 3 DAC connected with a M2Tech HiFace 2 from my PC.
I could try to squeeze more out of the DL3 by getting a higher end converter, like an Audiophilleo with PurePower.

I would eventually upgrade the DAC to a more current model, such as a NuWave DSD or alternative in the price range.

The question is how important are good USB-SPDIF's converters in todays market?
Would the Audiophilleo serve me well in the future with newer DAC's, or am I wasting money and better off just getting a NuWave DSD and connect with USB directly?

Thanks!


itsikhefez
Plug your new USB cable into a good converter like the M2Tech or the Berkeley. Then run a good AES cable (I use MIT) from the converter to the new DAC. That will be better than running your USB cable directly into your new DAC.
Thanks @psag but the M2Tech I had was a Hiface that is either BNC or RCA, and the NuWave DAC I got does not have AES inputs so not relevant in my case
@itsikhefez, 
RPi and HifiBerry w/linear PSU will crush most of the computer bandaids being suggested. The Pi family is an amazing thing...nonprofit scientific community at its best, nice that us audio nuts can take advantage of some of that goodwill and product experience. If you haven't check out Daphile software for those. A builder friend of mine uses it with great results.  You obviously have great building skills and that can take you a long way in this hobby! Cheers,
Spencer 

Right you are itsikhefez. I use the Hiface Evo, along with the battery power and external clock add-ons.