Just an update on my Concero HD that was sent back to Resonessence Labs for warranty repair. Mark Mallinson emailed me today that the unit has been repaired and is being shipped to me tomorrow via Fedex. Apparently a fuse blew and part of the circuitry was damaged. The whole board was replaced and underwent testing.
I tried to inquire about this failure, mainly what caused it. So far no more info other than what I mentioned above.
Being without the DAC for a month has been nuts for me since I don't have a comparable backup DAC. So, I am eager to listen to some music again when I get it back.