David,
Nice review. You've got a knack for this. Hopefully we'll see more higher end speakers reviewed in the future. Great choice of music BTW.
It's hard to believe a $7000 pair of towers that feature dual 8" woofers and a 6.5" midrange cannot excel without a subwoofer for two channel listening.
I've heard these towers, along with a few lines above them. All of them were powered by their own McIntosh MC1201 monoblocs. What was amazing was the wattage the VU meter was hitting at normal listening levels. These VU meters go from 120 watts to 1200 watts. The meter does not move at lightening speed (it's easily read). The meter was at minimum halfway between 120 and 1200 watts when pushing the 340's.
McIntosh keeps referring to making sure their towers can handle power. If one has to purchase a pair of 1200 watt monoblocs to drive these towers, I think many will be taking their hard earned money elsewhere.
Not that a 128 watt dual/mono amp couldn't drive a pair of 340's, but that type of amp wouldn't do justice to speakers that I've seen require a pair of MC1201 pushing them to a half kilowatt output.