@unsound - I find it more cognitively dissonant in the used / classic speaker market than it was in the new / heyday speaker market for a speaker to require extremely specialized and expensive amplification in order to work, even reasonably well. Of course there are users with relatively small rooms who listen at relatively moderate amplitude and who by good research or luck have a moderately priced amp that can drive later-career Thiels. But there are more who don't and plenty of driver damage done by less-than-stable amps. Yes there were real problems winding underhung voice coils with enough turns to raise driver impedance. But there was also a look-the-other way attitude about less than ideal amps. Note that Jim's recommended amps were always priced at a substantial $ multiplier of a pair of Thiel speakers.
