I had a Mytek DSD, (to clinical to my ears so I went to Bel Canto but if you want to use usb, you need to purchase a S/PDIF to USB convertor. Still didn't make that much different between my old REGA Saturn or my OPPO 95 player, so I went to ExaSound mkii , very nice dac highly recommend not to mention the Chord HD or the new HUGO. The BelCanto to me was pretty neutral did PCM rather nicely which means to me it didn't color the sound, but I was looking for a DSD capable dac.
I just wanted to add, try out the little $895.00 Teac UD501 pretty amazing little dac and it does DSD. I've been through a few dacs and these things are coming out every quarter at all price points. Try to listen to all price points before you buy. My next visit to DAC land will be in the form of a Player /Streamer like a Lumin or a modified Modwright or RedWine Sony HAP-Z1ES.