Q4: What about measurements? What do they tell us? What do they not tell us?
Measurement is more important in Interconnect cable or some digital or in computer cables , such as HDMI ,Cat cables..etc , because the signal is transferred by precise counts , so if the measurement figures are good , basically we can say it is a good quality cable .
For speaker cable or power cables , a good result of measurements is not the only prove the designed cable is efficient. But as an audio system always needs to be adjusted different systems and accessories to get the best quality , the most important thing to be considered is the system adjusments.