I think it all comes down to how well the cables are insulated and shielded.
I am interested as to how you address the wiring inside the equipment chassis and speaker boxes themselves. Should not the wiring inside the equipment be in par with the wiring on the outside connecting devices? Inside the equipment: "Cheap parts & wiring, lack of any internal shielding, attenuation or dampening of radio frequency & electromagnetic radiation."
I located a company just moments ago called
THE UPGRADE COMPANY They state:
"Stock mass-produced audio or video equipment even at the very highest price levels and magazine hype, never satisfies long term because it is contaminated with radio frequencies and low frequency electro magnetic radiation from within itself and right out of the airwaves that are all around us, unless it has been upgraded By The Upgrade Company."
"In short, here's what's going on with all stock audio or video equipment:
Cheap parts & wiring, lack of any internal shielding, attenuation or dampening of radio frequency & electromagnetic radiation. Naked wiring, naked parts, naked circuit boards. All metal attracts & collects radio frequencies ruining performance in all brands of Hi-Fi & Video. Try a piece of fish string or kite line for an antenna - it won't work at all. Only metal conductors collect radio frequencies. That means that all of the wiring, metal leads on parts, metal circuit traces inside DAC's, video scalers, op-amps etc. all parts inside all brands of HiFi & video are in fact collecting radio frequencies millions of times per second severely compromising both audio & video performance. The Upgrade Company is the only consumer electronics company effectively dealing with this issue.
Every electronic part and wire in the signal path can be thought of as an interconnect, and every electronic part and wire in the power supply can be thought of as a power cord. Our upgrades are in essence replacing a high number of interconnects and power cords within your components AND shielding & dissipating them! The effects are remarkable. Far greater then replacing the interconnects and power cords OUTSIDE the components.
The finest most expensive medical, military, aerospace and commercial telecom equipment and space satellites are extensively shielded inside to preserve and maintain absolute signal fidelity and not waste power supply energy. However consumer electronics have NEVER been RFI Ridded until
The Upgrade Company pioneered this technology in consumer electronics back in 1980, more then 33 years ago."