'[IDC Wrote: > Dragon;579840'] > Asynchronous mode is the current hype. In this case the *device* sets > the clock, the host has to deliver with that speed. No need for the DAC > to recover a clock at all, it can use a fixed internal ultraclock. Only > by using this scheme a USB DAC can outperform SPDIF in terms of > jitter. > > Jörg
This actually is not quite true. How adaptive performs is very much dependent on its implementation. The existing implementations vary from very poor to very good. The best ones can easily outperform almost all S/PDIF receivers. Even a 2706 if done well (good local clock, proper decoupling, good regulator) can outperform a standard crystal S/PDIF receiver (also implemented well). Of course its limited to 16/48. There are much better implementations than the 2706. A proper asynch USB CAN be better than any adaptive, but it has to be done right. Not all are. For example the infamous Musiland 01 USD is actually not a very good implementation, there are some adaptive implementations which are better. John S. -- JohnSwenson ------------------------------------------------------------------------ JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=82110
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