Wes Phillips & Jon Iverson

We were once again impressed by how un-hi-fi the sound in the deHavilland room was, this time in conjunction with a pair of Tannoy Prestiges. The $10,000/pair 50W deHavilland GM-70 single-ended triode is pure class-A, with zero negative feedback. The GM-70's directly-heated triode vacuum tube is said to be the largest output triode available today. We found the sound sweet, but surprisingly detailed and dynamic. Fit'n'finish were superb.

Many of the best-sounding rooms at the show employed Ayre's $16,500/pair 300W MX-R monoblock amplifiers. Yes, they look small enough to be class-D amplifiers, but they're pure analog. How'd they do it? The entire enclosure is the heatsink and Ayre's Charlie Hansen designed a special low-rise transformer, used in pairs, to keep the chassis so compact.

At CES 2006, Jon Iverson and I were impressed by Studio Electric's $8500 Type One modules, even though the mating $3500 XLR woofer modules weren't operating. This year Studio Electric was showing off a pair of the $15,500/pair Type Two towers, which were pure art deco chromed metal work.

We ran into SinglePower Inc.'s Mikhail Rotenberg as he was sprinting down the hall to the Synergistic Research room. "Check these out," he said. "These are a 1932 Tung Argon 4327 and a 1943 722A (323), labeled Centennial, but manufactured by Western Electric."