The Rolex of Hi-Fi Cables - Siltech's Flagship Royal Crown Series | SoundStage! InSight (April 2023) 

What this man is talking is pure nonsense, emi and rfi noises are not an issue on speaker cables since they carry relatively high voltages (compared to interconnect cables), to obtain 10w rms on 8 ohm speakers the signal output of the amplifier is 9 volt rms . External noises (emi and rfi) will be in the range of micro volts to millivolts max. (long cables can act as antennas) these are relatively very small and will have no impact on the sound and not be heard.any way since 2 leads of the speaker cables will have the same noise( if any) and the same phase the will cancel each other, beside the output impedance of the amplifier is very low and will drain this noise like it does when speaker coil generate signal in the opposite direction ( called damping factor). It is not like what happens in interconnect ( especially phono interconnect) were audio signals are much lower and noises can be a factor so we use shielded cables. You can make experiment yourself and use a phone charger as noise source and bring it close to the speakers cable, you will not hear anything no influence on sound whatsoever. Use good cables with low gauge (thik copper leads) but don't go insane with speaker cables, better invest money on other components of your audio system.

The degree of snake-oil salesmanship here is untouchable.

Stunning video and a beautiful product.

Rolex? So tbey're over priced crap, then?

I think to own the best cable. Art speak silvercore. Handbuild Dutch cable.

Strange comparison. In the world of high horology, Rolex is not considered truly high class but overpriced mid-class. In other words, Siltech actually says that you pay a lot of money for mid-class quality. (By the way, I do use Siltech loudspeaker cable and XLR interconnects, and I am very happy with it).