"how it come when comparing few transports with the same cable (digital) there is sonic difference also i was told that a BNC digital cable induce less Jitter this mean better for digital application???"
Simple. The BNC connector is only a small part of the "system" that must transfer the digital signal. The output buffers have a characteristic called "rise time", which will vary significantly from one transport to the next. Also, the output impedance of the transport is hardly ever exactly 75 ohms, as the spec requires. In fact most transports are way off the 75 ohms impedance spec. These things will cause reflections and uncertainty in the detection of the signal transitions, and this causes more jitter in one transport than another. The cable is only one part of the equation. This is why my customers pay me typically ~$1300 to mod their transports. It is to fix these things.
Steve N.
Empirical Audio
