20 Year Old Amplifiers compared to 2017

I have a huge respect for Nelson Pass. I have owned many of his amps and still own X250.5. I`ve also had Aleph 0 but don`t recall such statement in the manual.

Generally I agree with his statement but if the amp is worth it will be serviced after 20 years or so and the caps and other small things will be replaced.
I´ve owned a lots of amps some brand new some 40+ years. For a well designed amp with quality parts 20 years is nothing.

I also read the thread briefly but I can`t recall anyone who`s in "all amps sounds the same" school?

Merry Christmas!

Re "I also read the thread briefly but I can`t recall anyone who's in 'all amps sounds the same' school?"

Very first comment.

OK sorry I missed that.
I`ve heard of such "scientific" blind tests before and don't care to read their reports because I`m 101% confident that I hear clear differences between different amps, preamps, sources etc.

They probably used some muffled speakers and veiled preamp in their blind test so the results LOL :))

Lafayette KT-550 ? Yes, I rebuilt a couple of those and their smaller cousins
many years ago. They were really good as was the frequently disregarded Bogen equipment of the time. There has been a rampaging snobbery to the hobby for years and equipment like that old Lafayette tends to be considered junk both because it's old  and because it wasn't expensive when it was made. Bravo for mentioning it!

@plutos 
I agree with you 100%. I hear the differences between amps, preamps, tube sets. And measurements aren't everything.

Dan D'Agostino, in his Stereophile interview, said, point blank, that some of his Krell offerings measured better than his current stuff. He specifically chose sound quality over measurements in his highly acclaimed breed of new Momentum components.