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I wasn't discussing what you hear

Eli, this discussion has nothing to do with bench testing VS software. I never said you were wrong about claims that amps with the filter sound better. What I disagree with is the statement that the undesired energy you believe to be responsible for this is created in the large capacitor. A mathematical analysis in SPICE - using the same theoretical principles you yourself repeatedly pointed out - appears to confirm my opinion. That means the filter is almost certainly cleaning up energy created somewhere else, and that the need to apply it only to amps with large caps is a misuse of this topology. The origin of the high frequency energy is an important distinction, and it raises the issue of whether a different technique, say a filter at the mains, might perform just as well. Also, once it's realized that we're not dealing with mythological ills within larger capacitors, other options regarding filtering and power supply design might open up.


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