LATEST ADDITIONS

It takes a while for audio-related technologies to mature. Tubed amplifiers were invented by Lee de Forest in the nineteen-teens, but while there are still some adherents of early high-distortion triode designs, the age of mainstream high-fidelity amplification dawned with higher-power/lower-distortion amplifiers developed by Williamson and McIntosh followed by the Ultralinear take on the Williamson concept. That was 30+ years down the technology-evolution timeline after de Forest.

And when it comes to solid state amplifiers—the usual kind—does anyone prefer the state of the (germanium) art circa early 1960s to modern silicon class-AB designs? I doubt it.

Now, decades into its own development, class-D amplification seems to have sea legs, even in the audiophile world.

In 1928, Swiss engineer and inventor Jean-Léon Reutter created a clock that could run for years without human interaction or any type of external power source. The Atmos Clock required no AC power, batteries, solar panels, or hand-winding. It was able to wind itself by leveraging subtle changes in atmospheric pressure and temperature.

The design was so energy efficient that a single degree of temperature change provided enough power for two days of operation; it would take an incredible 60 million Atmos clocks to equal the power demands of a single 15W light bulb. 95 years later, the Atmos Clock is still being manufactured in Switzerland by Jaeger-LeCoultre, but like most high-precision, Swiss-made instruments, it isn't cheap. Prices start around $7500.

Liner notes from jazz albums of the 1950s and 1960s can be shot through with naivete, hipsterism (usually faux), and callousness toward the abundance of musical talent then working. Few though are as shortsighted as the original essay by Jack Maher on the back of 1960's Workin' with the Miles Davis Quintet. Opening with "Miles Davis is the most maligned and idolized musician in modern American jazz today. He is at once the saint and the sinner," he goes on to cite a dynamic that literally all musicians experience, especially when playing live: "He has been accused of being lackadaisical and unconcerned about his playing. When the spirit moves him, he plays with warmth and lyric beauty, at other times he plays with vague disinterest."

Once the tape was running, however, Miles rarely missed a step. Among all of Davis's recording triumphs, the pair of sessions with Rudy Van Gelder in Hackensack, New Jersey, his May and September 1956 sessions with saxophonist John Coltrane, pianist Red Garland, bassist Paul Chambers, and drummer Philly Joe Jones, remain among his finest moments on record.

Walking into one of the rooms hosted by Middle River, MD audio dealer Just Audio was a bit of a surprise, and to quote Yogi Berra, "It's like déjà vu all over again."

The first things I saw were the Mission 770—reviewed by JA1 in November 2022 and Mission 700 loudspeakers. They were flanked by display boards that rocked me back to the mid-1980s, when I was deciding between the Missions and Celestion 6s. Tom Bryant of Just Audio explained that Mission didn't want to build a part-for-part recreation of the speakers, or to build 770s using new parts. The goal was to design and build a thoroughly modern speaker that that resembled the original as closely as possible but could compete with anything being built today.