Jitter issues with dacs....

Jitter is a problem with virtually all Transports, particularly stock. Jitter is also increased with lossy S/PDIF cabling. It is aggravated by systems that are not properly impedance matched as well.

I can only speak for myself - I can plainly hear the effects of jitter - they are like echoes or halos around each instrument or like high-frequency sibilance. Adding a Superclock2 to a transport or DAC significantly reduces jitter and this change should be obvious to anyone that is not deaf.

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.