Originally Posted by bigshot
There's time shifting in EVERY recording on an order of magnitude many many many times the figures being quoted by jitter "experts". It's called reverb. An easy way to find out how big a difference jitter makes would be to set up a reverb that operates in the picoseconds. Good luck being able to hear it!
Heaven help us when the new turntable kids on the block discover that there is a time and phase difference between the sound at the beginning of a vinyl record and the end of it. That's unless you use a linear tracking arm. To me that phase and time shift is far more noticeable.
For the record, the jitter in a DAC chip could be zero, and still that would mean absolutely nothing in real term. The clock IC also has jitter, and the lowest jitter spec. receiver I know of is the DIR9001 with figures quoted at about 50ps. So unless your DAC etc. uses a DIR9001 you are suffering from loads of jitter at this moment in time. I bet you that you are now worried and you are going to look for anything with a DIR9001 in it.
Then we have jitter issues in the digital connection cables.
And whilst we are at it, the jitter figures for USB to I2S or SPDIF converters are horrendous. Still many come of head-fi and ask for a USB DAC. I myself only touch USB DACs in absolute emergency, but bot so much for their high jitter as for their diabolical dynamic range that is well short of the dynamic range of 44.1KHz/16Bit stereo. But do I hear those poor USB performance DACs being discussed in terms of jitter and dynamic range? Nope, since it would hurt sales of some frequently mentioned USB input only DACs.