Do you know how a power supply works and what it does? Do you actually KNOW and have the equipment to detect and measure the EMI/RFI you claim invades speaker and IC cables?
Did you know that a power supply delivers DC (that is DIRECT current) to the components. Do you know that DC is well filtered and by definition has a ZERO frequency. To be audible, there must be some oscillation in excess of 20hz.
Do you see why that poses a problem in a DC supply? The same applies to a video image. Baseband video of analog RGB can be affected by ground loops BUT that presents as slowly moving darker color bars or in some cases black bars rising through the image.
In a properly designed video processing circuit, the color, drive, hue, (chrominance and luminance) are internally controlled to industry specifications.
In a working system, connected to correct signal levels by 75 ohm cable, any variation is due to user actions.
As I have pointed out, the cabling used in the studios, not only in the IC functions between components but internally to the control devices themselves are NOT the mega buck Hyperbole brands, but rather off the shelf properly sized cables.
Look at the cabling in you computer. The video and data lines are not shielded. They are 26awg flat ribbon cables. In the units that use the newer rounded cables, the reason is that airflow is affected by too may ribbon cables inadvertently directing cooling airflow away from the processors.
Given the speed and accuracy required of computers, does it not make sense from the audiophool standpoint to design mega buck cables for the computer interconnects?
Ever see the inside of a Telco Jbox? That is where your high speed data Xfer, and simultaneous voice Xmission lines achieve all this over weathered 24 awg wires miles long, using brass connectors and with no shielding! Amazing. Yet somehow folks with no actual technical knowledge in the real world of electronics are convinced that the rest of the professional world of engineers and technicians are all wrong.
Here is the link to one of the Canare cables I use in the hundreds of thousands of feet per year.http://www.canare.com/ProductItemDis...oductItemID=53
I would love to see the same array of specifications for any brand of mega buck cable.