“One of the most significant changes is that we no longer make us of aluminium in our cables. Aluminium is popular mainly because it is affordable and easy to work with. But due to its brittle and artificial tone as well as the hysteresis effects it causes, it is in no way a suitable material for audio equipment. That is probably why there aren’t any musical instruments made of aluminium…….”
So basically, the key advertising hook from a company that is literally selling a 3M pair of speaker cables for $150K is that they “no longer make us (use) of aluminium in our cable”.
That’s reassuring, KUDOs to the engineering department, let me go find my wallet.

