Papertiger,
I've owned only one of the DACs that are on your short list, which is, the Kora Hermes (18 bit version). There are XRL and RCA digital inputs, but only an RCA output; that, by the way, can be adjusted from 2 or 5 volts via the toggle switch on the rear. To be quite candid, the Kora Hermes has that much sought-after ability of allowing the emotion of the performance to shine through. Vocals-- especially female vocals-- are so full, lush and life-like that you'll wonder why the Hermes doesn't cost $4K (it did a year or so ago). The most fascinating aspect of this DAC's sound is its uncanny ability to make sung lyrics that were unintelligible before, perfectly understandable. I'm not affiliated with Kora, but simply enamored with their products' sound and value. Go get it, (paper) Tiger!!
I've owned only one of the DACs that are on your short list, which is, the Kora Hermes (18 bit version). There are XRL and RCA digital inputs, but only an RCA output; that, by the way, can be adjusted from 2 or 5 volts via the toggle switch on the rear. To be quite candid, the Kora Hermes has that much sought-after ability of allowing the emotion of the performance to shine through. Vocals-- especially female vocals-- are so full, lush and life-like that you'll wonder why the Hermes doesn't cost $4K (it did a year or so ago). The most fascinating aspect of this DAC's sound is its uncanny ability to make sung lyrics that were unintelligible before, perfectly understandable. I'm not affiliated with Kora, but simply enamored with their products' sound and value. Go get it, (paper) Tiger!!