Schiit Audio Releases its Unison USB Upgrade

[Miska]

Are there changes in supported playback formats? Anything higher res than 192/24 now?

 

[Miska]

48 minutes ago, mansr said:

A PC with an optical drive?

 

Or even just RaspberryPi or other small SBC. I do that same with HQPlayer, and get upsampled CD data out of the USB to the DAC. In fact the early versions of HQPlayer were for my DIY upsampling CD player which could also play MP3 internet radio. But that was way over 10 years ago... To me, CD is pretty much dead these days...

 

[Miska]

58 minutes ago, mansr said:

Obviously. What I'm curious about is why they chose transformers for some signals and an IC for others.

 

For correct isolation, clocks should be at the DAC side, not at the interface side (I2S over HDMI/LVDS screws this up completely). So clocks flow to the opposite direction...

 

Transformers are good for high frequency constant signal like master clock. But perform poorly for low frequency things like word clock on I2S. While isolation IC's tend to be slow, so not necessarily good for things like master clock, but good for word clock for example (esp. optical ones). So I suspect they chose transformers for higher frequency time-invariant signals and isolation IC's for varying low frequency signals.