The general wisdom on Silver (tinkly top) vs. Copper (fuller, but not as clear) sound is usually correct, as far as it goes.
There is NO transition between the two cables used in the same system, since they don't physically touch. The dealer may have been trying to say something like I say on my website, which is when you use a cable that is actually cleaner than another, you'll hear ONLY the *less clean* cable!
Some people try to use a silver and a copper cable to get a balanced sound. I feel that this is generally NOT a good idea, but with most silver cables, it might be the only choice you have (in an otherwise relatively neutral system) to get a tonal balance that is about right.
When I first came out with Silver Lighting interconnects, (over 10 years now) I found that the nice part of silver was great, but it always seemed to have a deficit in the lower mids and bass. So, I developed Silver Lightning and found a way to solve the tonal balance issue in silver and still preserve the benefits of that "silver sound."
One should be careful when comparing cables to understand that in *majority* the differences between cables are due to
the *physical geometry* being different - so comparisons between silver and copper are best done with otherwise identical cables! This is tough to do for most people, but keep this in mind when listening. The secondary factors are then the materials and the connectors, if all other things are equal.
