Yeah, the problem is I'd need to upgrade the USB chip to the XMOS board which adds another ~$200 or so (the current chip requires a driver on OS X which I just won't install). At that price I'd probably go for a refurb Oppo HA-1 which has that cool looking display.
The HA-1 is a DAC/Amp combo so you're payng $1200 for a DAC plus an amp you won't use and a flashy display that doesn't contribute much if you're not using the full combo. If you wanted a similar DAC to the one in the HA-1, the Audio-GD NFB-1DAC is significantly cheaper and should sound about the same. It's not an American company but it's got an XMOS interface, balanced, yadda yadda.
Just throwing it out there. I'm a value-oriented kind of guy and it's like fingernails on a chalkboard to pay $1200 for a DAC (plus stuff I won't use) vs $650 for the same DAC chip in a standalone unit. And FWIW, I find that Audio-GD has one of the better Sabre DAC implementations I've heard. So in my humble opinion, it's also a better dac for half the price.
I realize though that we all have our own value preferences so good luck with whatever you choose!