Because WM8805 is not as neutral as DIR9001.
You can order BNC instead of RCA for other SPDIF inputs though.
I think it's pretty cleaver to have different chips on different inputs. And having an RCA in changed to BNC is only like $10 and doesn't cause a delay. Though I'd think they use BNC standard on the higher data rate signals.
There's another reclocker, I don't remember the make or the exact issue but it had several outputs including AES. The manufacture themselves stated that they would rate AES the lowest quality signal. Something like it needed to be buffered then converted to an AES signal or something... I'm not sure how or why their implamentation would be different than others it sounds like though AES may be the best for long paths, it's not the best to have a signal converted into.
I2S can be directly connected to a DAC chip, so it does not have digital signal conversion like AES. But it really comes down to implementation.
It probably comes down to the quality of the transformers used. You could always upgrade them to Lundahl on both ends for better AES performance.
I2S can't be connected directly to a PCM1704. It has to be converted to PCM, typically like here with a FPGA.
you are all kinds of wrong on that one duder...the 1704 is an old school chip design, it doesnt have any sort of spdif reciever built in
Any more impressions of the Master 7? Particularly on the key differences in sound as compared to the Ref 7.1?
I'm tempted to upgrade from the Ref 7.1 to the Master 7 but would like to know if the Master 7 is indeed a clear step up from the Ref 7.1 and in what ways?
To be honest, I'm not surprised. I think this particular DAC is limited by the transport, which is why I have invested more money into that than I have in the DAC.