Well you need some headphones macca , I could clearly hear a difference, not huge but a difference.
like I said there could be reasons for that other than the amp breaking in. Just having the mic in a slightly different position from the first time for example. We don't have any info on what controls or methods he used, so this can't be accepted as evidence of anything. Sorry.
if it was a test to show that amplifiers don't burn in the same would be true.
''I think a lot of digital people are just bored because there's little to tweak.
Suddenly boutique network cables, switches and usb cables are a thing you're into because, well what else is there except listening to music?''
The full klippel test runs 1000 measurements, 3 second bursts and uses full range signal. So equivalent to over 40 minutes of full range run in and much greater thermal cycling.
But not equivalent to 100hrs? I assume it's 3 seconds bursts over the entire frequency range, so not many minutes of Low frequency. I thought the best way to break in quickly would be to play a few hours of Low frequency at high amplitude.