I'm not sure on the multiple USB dacs.

I'm asking because I'm tossing around the idea of looking into having an outboard DAC built that would have multiple RCA level outputs with high voltages. Something that has replaceable opamps and possibly other components.

I'm wondering if it would be better to go over USB or over optical.

Seems to me that USB would be the best bet since not all computers have optical outputs.

What options would you think would be desireable for something like this?

I'm thinking about 10 outputs (5 pairs).

Heck, maybe even making the board it's self but making it a project type board. That way, if I wanted to use the WBT sockets, but someone else didn't want to spend that much money, it's all an option. Same with the DACs and with the other components.

Something where you can pick the RCA sockets you want to use. The caps, the opamps, etc.

But since I know literally nothing about doing somehting on this level, it's going to take some collaboration.

This would be something that's an audiophile upgrade for most folks with CarPCs. Once something like this is done, we could approach a developer about integrating all of the software into one program...or something that could be integrated into a front end.