Sean, I get everything your saying. Obviously, I don't think people should base their decisions on this one type of test...still, it's interesting, at least. And JA doesn't really give rationale for doing these tests - maybe just because he can? However, if you look at the higher end amps they review, and compare with the relatively "lo-fi" ones, the square waves are typically produced better by the former. This correlation doesn't prove anything, but it does suggest to me, anyway, that the tests could be meaningful. (And he does also do FFTs and all that good stuff.) Maybe I should ask JA himself about these square wave tests over at the Stereophile forum.
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