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Original Message

Just a couple comments ....

Posted by Dave I on August 8, 2000 at 11:33:55:
Jitter is not usually considered an error. It is simply the timing variation in the edges of a clock. In the case of a transport/cable/DAC it is the timing variations on the clock recovered from the bi-phase coded SPDIF data stream using a phase-lock-loop circuit. A jitter attenuator or suppressor cannot fix any errors in the data if they occur but it can reduce the timing variation in the edges of this clock which is later used at the DAC IC (the only place it matters) to control the timing of the digital to analog conversion.
The transport and cable are still a concern with a sophisticated jitter suppression system but as the system gets better the concern gets to be less and less. Think of what would happen if the transport and cable was used to transfer the data to your computer hard drive and then disconnected from the system. Do you think that if the data from the hard drive was then transferred to the DAC there would still be a signature from the disconnected transport and cable? Not unless it was modifying the data from the CD.
Again, my only point originally was to say that a device which effectively reduces jitter should make it more difficult to hear transport differences, not easier. It was just an observation on your use of words for describing the effectiveness of the device. I am not doubting what you hear.
Dave