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Or was it the distortion spectrum that killed them?

That's the trouble with much of audio progress -- there are too many variables to really pinpoint cause and effect.

In many high-feedback SS amps, you will see "lots" of dist products of 5-10th order. Nasty stuff! And of course, bandwidth-limiting is a good way to avoid slewing problems.

So it's hard to say whether extended bandwidth by itself is a good (or bad) thing.....

I suspect that most modern moving coils extend well past 20kHz. The Ortofon I use (Kontrapunkt B) is spec'ed at 50kHz (-3dB). I believe (but certainly cannot prove) that this contributes to an airier/more transparent top end, since it implies that the mechanical resonances are further from the music.

Peter

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