I think flying_fool has a point, the link does clearly state: "Although some people strongly feel otherwise, good amplifiers of comparable quality and power that are not being overdriven will sound very much alike under most conditions to most people."
I'd have to totally agree with that statement, provided they are really of the same quality (similar power supply, amp design, good components, etc...). After all, an amp that dies after 6 years isn't going to sound too good at year 6. It depends on what you want to say quality is I guess...!?! If you think an amp using caps by some no name manufacturer is "quality," I'd seriously reconsider your definition of quality.
Cheaper caps do die sooner, so putting a cheap off brand cap no one has ever heard of next to a heat sink, is much worse than putting a high quality cap next to a heat sink. Do we really trust some no name Chinese capacitor manufacturer to do proper testing, use consistent materials, etc...? What about one that's changed their names a couple times?!? I'd much rather see Emotiva choose components that at least have a brand that's well known... especially for components that will eventually need replaced and are right beside a heat sink.
Maybe we all need to take a breather and just read the Emotiva XPA-5 thread and see all of the failures for ourselves. I'd never been there, but the first page I clicked on had failures... Imagine that!?! How much you wanna bet it was the cheap a$$ capacitors?