And wrt your second question… that’s very personal. It depends on what you want. If you require a DAC then this HAT is perfect. If you have a stand-alone DAC then I would suggest to look at a ‘transport-only’ HAT like the HifiBerry Digi+ or Allo’s DigiOne.
I already have a stand alone DAC. I’m going to use the Oppo Sonica mainly. I also have a few other DACs I’m going to try it with too. Burson Conductor V2+, and MHDT LAB Atlantis, et al. I’m mainly going to use the endpoint for USB <-> Ethernet but I want to try a Pi DAC to see what they are like.
If you are taking about “native dsd playback” then you are right, but I don’t mind that it has to be “native” , better a good sounding Burr Brown PCM DAC that plays DSD Converted by ROON to the highest PCM rate supported by the DAC, then a ESS DSD “native” dac, that sounds artificial, and unrealistic, my HifiBerry DAC+ Pro connected to my Yarland tube amplifier sounds very, very good to my ears!