Totally entertainment: this article from Stereophile is Very Very Old (originally from 1987), but is interesting. Trains and sound reproduction. And really, would you WANT a sound system that could correctly reproduce a correct recording of everything from 1 to 120db sound pressure levels across the entire audio range (and even a bit outside) in your living or listening room? Yes, I know, a perfectionist would...
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www.stereophile.com]