God damn RGB ruins everything. Another question for you. If you are taking SPDIF signal directly from the board, then why isn't a TOSLINK output on some of the board be good enough? Is it a technical issue or a pricing issue?
That's the point exactly - onboard TOSLINK might be good enough for most, but it's definitely crappy on a $100K-$1M sound system, which is my high-end market. For one thing, TOSLINK tops out at 96KHz sample rate and can't always do 192 KHz, or many DACs only go up to 96 KHz on their optical inputs. For another, our daughterboards clean up only the coaxial signal, rather than an optical one. Thirdly, the 110 Ohm AES signal generated by the daughterboard is the absolute best compared to any SPDIF, optical or 75 Ohm BNC/RCA.
We could possibly use the optical TOSLINK signal, but then there would be two unnecessary conversion steps involved. What I'm looking at is to modify future motherboards and interrupt the traces going to the optical output, putting in a header for us to use. This is involved and expensive, of course, but we'll also go as far as to modify onboard clocks to use an external master clock board that regulates audio, ethernet and USB perfectly, eliminating a lot of electrical noise from these IO components.