rtaylor76
100+ Head-Fier
I think you are referring to USB 3.0, not Schiit's 3rd generation of it's USB input.
Then it is a difference between the C-Media CM6631A and the C-Media CM6632A as well as their implementation of that chip to the rest of the parts. The one difference that I see that the 6632A has over the 6631A is:
- Asynchronous synchronization transfer to reduce clock jitter
- Five pairs of I2S or left-justified serial audio output interfaces (8+2-ch out) [vs 2 with the 6631A]
Both use the same embedded 8051 processor. I also take it that the C-Media CM6632 is a slight better designed controller and might have been needed to the implementation of Yiggy. I also think they are more expensive.
Thanks, but that's confusing. Latency and transfer rate are independent variables.
I guess I still think of USB audio in terms of pro audio interfaces, which latency is an issue when overdubbing if you do not have a zero-latency monitoring. USB 2.0 were bad, most over 10ms, but more stable at 15ms or 20ms requiring lots of buffering when recording. USB 3.0 can cut this down to less than 5ms. But this is encoding, processed by the computer, then decoding back down the same USB cable, to the converter, and then out. Faster transfer speeds help.
Schiit is speaking of their 3rd generation USB, not USB 3.0 standard (I too was confused, see above). But I still think actual USB 3.0 could buffer less.