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Just buy a Benchmark and have done with it

ASRC does work, though some insist on using old school stuff (like Ack! Dack) where the lack of any flavor of buffering does require incredibly low levels of jitter. I'd expect something like that to possibly show differences between transports and cables that a Benchmark would be immune to.

Also, people still seem to imply that there is some kind of exotic time/phase distortion coming out of the DAC;what jitter is converted into is noise and harmonic distortion spectra. I will admit that a basic THD+N measurement isn't sufficient to characterize these spectra. I think Jon Risch covered the fact that you can fiddle with your measurement, dishonestly averaging and massaging the noise and distortion until they seem to disappear for advertising purposes.

One point to note is that jitter measured somewhere inside the DAC isn't relevant, you should measure the noise and distortion that comes out. That's what we're going to hear.

The jitter spectrum going in should affect what goes out,but that should pretty much disappear with proper asynchronous sample rate conversion. I think a jitter spectrum/test signal protocol for testing DAC's has been suggested in PropHead.

For documentation on all the DAC architectures, the way they behave when confronted with jitter and an explanation of what comes out on the analog side, check out the thread below and especially, CHECK OUT THE REFERENCES in the TAC #21 article by Robert Adams! The AES Preprint 3570 is the real mother lode;the Audio Critic article is a somewhat dumbed down version.

http://db.audioasylum.com/cgi/m.mpl?forum=prophead&n=11550&highlight=jitter&r=&session=

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