You said it all buckhorn_cortezI talked with a software engineer who also had a masters degree in electrical engineering. He said, "Let me look at it."
About an hour later he came to me and said, "I've found the problem, let me show you." He had found a 250 kHz signal modulated onto the power sine wave.
He as an engineer measured and he found.
There's non of that going on here with the pro side of fuses can sound better, also when they are reversed.
Cheers George