Jitter reduction, best device?

Well, I describe it as hard edged, as oppose to warm like, but shrill works.

mapman
i disagree on your theory that your ears can tell if you have jitter or not. all i can tell you is if you hook up the jitter device between the source component and the dac, you will hear a big improvement, something you won't hear until you hear hear the difference. just like going from a mid-fi system to a hi-fi system. you might think how can music sound any better than this mid-fi system. you won't know until you hear a system that produces music that you haven't heard before. also, i'm not talking about a shrill sound becoming warm or rough edges. a jitter device is not going to make a bad system great. my den system consists of a dk design integrated amp, dvp9000es, adcom gda-700 dac, totem speakers and subwoofer, and a connection from my music server. a decent system for a den. when i placed a cheap audio alchemy jitter device (get my feet wet with jitter devices), my sub was way out of adjustment (more powerful and way too loud), and the whole soundstage opened up. when you get a better jitter device, it opens up the sound even more. bottom line, i got as much improvement from the jitter device as i did placing the dac in the system.

In truth, Digitalis would be from the Foxglove plant and the origin of Digoxin, a heart medication. Digititis would be the proper audiophile term for an unpleasant sharp and edgy sound derived from digital sources, such as compact discs. Just to be precise!

So back to the original question, which device is best, and why, please?

I'm not sure how audiophiles can diagnose a jitter problem except by trying jitter reduction devices and listening. In general, upsampling DAC's will be more immune to jitter because they re-clock the signal to a higher rate. The re-clocking will filter out a lot of the jitter in the original signal. I haven't seen any way to measure jitter except for using expensive lab equipment.