I want to thank all who took the time to respond and educate the non-EEs (me) on this complex topic. I now have a better understanding of things. The reason I asked in the first place was because the manufacturer of the pre-amp I just purchased suggested that a long interconnect to the amp would be OK if I used and IC that kept the resistance low. I will now go back and ask if he meant resistance or impedance. (Does anyone know what he may have meant? He does not publish an output impedance spec for the pre-amp).
Sean, in particular, thanks for explaining the concept of an impedance transformer as related to interconnects. I see now how the electrical parameters of the components connected along with ICs have a big impact on the complex impedances of the system. Understanding that the impact of a cables Z (nominal impedance) depends on its application (amp-speaker or source-pre-amp) wouldnt one now question the cable manufacture that says that a lower Z for both IC's and SC's is always better? Perhaps I missed something.
Regards,
Sean, in particular, thanks for explaining the concept of an impedance transformer as related to interconnects. I see now how the electrical parameters of the components connected along with ICs have a big impact on the complex impedances of the system. Understanding that the impact of a cables Z (nominal impedance) depends on its application (amp-speaker or source-pre-amp) wouldnt one now question the cable manufacture that says that a lower Z for both IC's and SC's is always better? Perhaps I missed something.
Regards,