I use the usb output to feed a Usb to i2s converter and dac- a Twisted Pear Amanero/Hermes/Rhea/Cronus feeding a ES9028 Buffalo III se Pro dac. The sound is truly excellent. The converter performs optical isolation and precision reclocking.
When the Mini fails or drops out of support my only Auralic option would be the Aries G1- over 4x the price, for, in the main, extra features that I already have- see above- or don’t need. Is a replacement for the Mini in the works?