There are quite a few cables that use "A BOX" at the beginning of the run. It usually has an inductor, and some, have a bass notch. Others use a second network at the end of the run for HF attenuation, and UHF cut, usually around 19 - 20K. Yes they have tone control.
Some use the "the box" to add different wire composition in series, and or parallel.
Sometimes the negative, or the positive, or both. I used a lot of different types, and sizes on turret boards..
The cable themselfs, have a signature too. No doubt Aluminum, vs copper, vs silver, vs a clad of tin, copper, silver, or gold on the conductor. Solid core, multi strand, mixed stand, shielding, dielectrics, covers and armor... Then there is bare or tinned. A lot use terminals, same thing, copper, brass, silver, tinned, bronze, Alu, SS. Carbon.
They all sound the same?
Then there is WAR PAINT... You know the stuff you paint on and let settle between all the connections...
Usually, super conductive.
Oh yea it all changes the sound....
Regards