opaqueice;230035 Wrote: > Interesting - thanks for the detailed summary. Have you heard > differences with modern jitter-rejecting DACs? The Benchmark DAC1 for > example? According to their measurements it's totally immune to input > jitter, so if you hear a difference it would have to be for some other > reason.
To be fair, this is what is written on the Benchmark website: > The Benchmark UltraLock™ system is nearly 100% jitter immune. The > D/A conversion clock is totally isolated from the input digital audio > clock in a topology that outperforms two-stage PLL designs. In fact, no > jitter-induced artifacts can be detected using an Audio Precision System > 2 Cascade test set. > > Measurement limits include detection of artifacts as low as -140 dBFS, > application of jitter amplitudes as high as 12.75 unit intervals (UI) > and application of jitter over a frequency range of 2 Hz to 200 kHz. > > Any signal that can be decoded by the USB or AES/EBU receivers will be > reproduced without the addition of any measurable jitter artifacts. The > AES/EBU receiver IC has been selected for its ability to accurately > recover data in the presence of very high jitter levels. Note it says "nearly immune". And in the last paragraph, "will be reproduced without the *addition of any measurable jitter artifacts*". That is pretty clever ad writing. It does not say "totally immune" to jitter or "100% jitter rejection". With the ASRC they are using, that would be impossible. Sure, jitter can be reduced a lot, and while I personally doubt that jitter at these low levels is audible, it is wrong to say there is *no jitter*. -- ezkcdude There are 10 kind of people in the world - those who understand binary and those who don't. SHINYMETAL '*Site*' (http://www.ezdiyaudio.com)| '*RSS*' (http://www2.kumc.edu/students/ezamir/rss/ezdiyaudio.xml) |'*Forum*' (http://ezdiyaudio.informe.com) ------------------------------------------------------------------------ ezkcdude's Profile: http://forums.slimdevices.com/member.php?userid=2545 View this thread: http://forums.slimdevices.com/showthread.php?t=38637 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
