Arrows on cables.

They probably point, lovingly, at your wallet.

What level of hell is this, again?

Typically the directionality is for a single ended shield. Two internal conductors with an overall shield connected at one end. Start is the out put of the component to the input of the next.

Does it work? Definite maybe.

AudioQuest claims that the wire drawn through the die will determine which direction the signal should flow due to the "diode" effect in which the metals is oriented...and they listen to each wire to understand how the cable should be assembled. Wow...ok...sure. Seems like SR took this BS from AQ in his marketing.

Nordost says the way the wire is drawn makes no difference. It's the signal flowing through the wire that orients the lattice structure of the wire.

Both are "experts" in conductor metallurgy, apparently.

Which "expert" is correct?

from source to preamp from pre amp to amp from amp to speaker