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.

Eldartford: You keep having the same misconception about the jitter problem in CD playback over and over again. All your background in digital electronic does not help because your background is stricly only in digital domain.
In CD playback, there is an interaction between digial and analog and it is completely different from what you think.

Kana813 - no I have not measured the jitter. I would like to, but I need some equipment that I cannot currently afford in order to do this....

Eldartford is correct. Solving the jitter problem only requires FIFO buffering at the desination. However, it is non-trivial to still maintain all of the real-time functions of a typical DVD or CD player with a FIFO buffer queuing the data, such as fast forward, skip etc, without incurring large latency penalties.

Audioengr: All cd have some kind of buffer, large or small. In fact, they would not function without buffering their data after reading from the disk. The problem is that the clock itself has jitter. Anyway, I hope people would understand more before voicing their opinions.

Andy2 - I am referring to a large FIFO buffer at the DAC, not in the transport. If this is in place, then the data can be clocked out of this buffer independent of the speed of the drive, virtually eliminating jitter, assuming the read clock is very stable.

I know a little bit about this, having designed digital harware as a EE for almost 30 years. I was a design team leader on the Pentium 2.