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Why power cable effect overall syste sound?

Power cables effect the system sound. This is a well-known fact. My question is why.. specially in case of low power type "A" amplifiers where current is constant. In my single ended 300B the cable creates huge difference. Does it points on power supply PSRR issue? Actually in case of well designed power supply, the power cable should not introduce any improvement. We are spending hundreds of dollars for the 1 meter of cable from outlet to IEG socket where meters of cheap wires running in the walls and it does work. The answer on this question is puzzling me.
abronfer

Showing 1 response by geph0007

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geph0007
184 posts
 
WOW!! I find it good comedy to have a person sit next to me who does not believe cables make a difference (note I said difference,not better, good or bad difference has to be ones own choice) and watch their face when the actualy hear the change in sound from a cable switch.
Yes it is INCREDIBLY annoying that a simple wire does make a difference. (and power cords are the most annoying, ITS A POWER CORD!!!) Do not want to know why, do not care. It gives me a headach but, it is true.
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