Aloha guys,
Thanks for your enthusiasm and curiosity for the product.
Sorry for the awkward delays, new products always take longer than you think they will..... It's not vaporware, I can assure you.
To answer some questions:
Balanced outputs.
YES. Basically, they already are. The RCA outs are connected straight to the transformer secondary. Perhaps an XLR output could be an option. Or you could use an RCA to XLR cable.
USB: The USB chip outputs SPDIF, which is then sent to the receiver chip where it is reclocked and reformatted before being sent to the DAC chip. Coax and XLR go straight to the receiver chip, then the DAC.
How do I know? I designed the silly thing!
It does sound best with battery power supply, but the normal 12V supply isn't bad either. I've been a fan of transformer coupled circuits in Hi-Fi and pro audio for years, that's why I built this one.
Have I heard better? Well, yes, but not at anywhere near the price.
I hope some other guys enjoy it, too.