A few years ago, Leif Johannsen, Ortofon's chief officer of acoustics and technology, was tasked with designing new products to commemorate the company's 100th anniversary, in 2018 (footnote 1). Ten years ago, to celebrate Ortofon's 90th, he came up with the radical A90 moving-coil cartridge, which used Selective Laser Melt (SLM) technology to laser-weld together microparticles of stainless steel, layer by layer, to produce a 3D-printed metal body whose shape would have been impossible to machine.

As I begin writing this column, I'm on an airplane on my way back from the funeral of David A. Wilson, founder of Wilson Audio Specialties. Two days before I left for Provo, Utah, came the news that my friend and analog mentor, Wally Malewicz, had died the previous day in Minneapolis, after suffering a massive heart attack. Immutable Music's Seiji Yoshioka, designer of the Transfiguration phono cartridges, passed away February 17, after a lengthy hospital stay.

Mingus at Carnegie Hall documents one of the most extraordinary live jazz concerts. Atlantic Records released a one-disc LP of the same title in 1975,a few months after the heady event, but it included only the second half of the show—late-career Charles Mingus's young quintet jamming for 45 minutes with three older guest stars on Ellington standards "C Jam Blues" and "Perdido" (the latter written by Juan Tizol).

No one taught me more about the heralded tone of Ortofon SPU cartridges, the magical pacing of idler-drive turntables, or the dynamics and speed of horn-loaded speakers than Art Dudley, Stereophile's late deputy editor. His equipment reviews and monthly Listening columns weren't merely tutorials on how to review audio equipment with insight and an individual voice; they were also an entertaining, informative immersion into the kind of hi-fi he loved. We also shared many conversations, though too few.

A few audio retailers have recently closed their doors due to pandemic-related hardship or retirement—Lyric Hi-Fi in NYC is a landmark case. So it's refreshing to hear about a longstanding bricks-and-mortar dealer- ship that has avoided that fate: House of Stereo in Jacksonville, Florida.

I don't like being pigeonholed as a reviewer of exclusively expensive audio components—because I'm not, as anyone who regularly peruses Analog Planet knows. So, to ease the pain of reviewing the half-million-dollar Air Force Zero turntable—you'll find that review elsehere in this issue—I figured I'd cover some more reasonably priced analog gear here in Analog Corner.