"Frequency is measured in the unit hertz (Hz), referring to a number of cycles per second." (Wikipedia)
There was no differentiation between AC or ohms....just frequency.
DC is a constant flow of power, with no fluctuation....unless you vary it....in a frequency.
If your speaker cables, signal interconnects, or input/output cables betwixt your computer to your system were only DC 'power'....without modulation of some sort....(the DC acting as a 'carrier' for the 'signal', which gets 'interpreted' by circuitry)....the 'signal' being 'fluctuations', be it digital or analog....
Digital is still hz, khz, or mhz.....analog gets the same descriptions.....
One ought to be able to extrapolate that cables of any variety are ambisexual as to 'direction'. The wires Have to be able to 'go both ways'.
The whole issue of 'cable direction' imho is a farce....and a cruel and expensive one at that. And shields carry no frequency....hopefully...
The claim that X manufacturer has a means of creating 'directional qualities' into wires without effecting the quality of the 'signal' or 'flow' of same is on the order of claiming one has received a directive from kenjit that will create Perfection in said wire quality.
What are y'all smoking? Can I have some?