Jitter issues with dacs....

Audioengr- have you measured the before and after jitter levels on the units you mod?

I agree that the effects of reducing jitter are obvious. The system will sound much smoother and more dynamic. I find
reducing/eliminating power supply noise to be just as great
an improvement as add-on clocks, all of which recommend using their own power supply.

Audioengr- thanks for your response. I know the measurement
equipment is very expensive, but it would be interesting
to find out what level of jitter reduction is required for
better sound quality. It also appears, that the input receiver on some DACs is more sensitive to jitter than others.

Andy2- "The problem is that the clock itself has jitter."
This is why I still use the discontinued Genesis Digital Lens, and a number of audiophiles are now using a Apogee Big Ben to deal with clock issues.

But, as I said in my eariler post, if you feed your transport or CDP's clock cleaner power, you can improve it's performance and reduce jitter. Upgrading cheap polarized caps in the digital circuit path also helps.