You have probably read speaker reports that suggested that you audition with natural sounds like clanking chains, storms, animals and other things that give an easy reference to live experience. The problem is that most sound-effects albums are a real bore, dominated by reject Walt Disney announcers with adenoid problems.

I first learned of the Kuzma Stogi at the 1993 Winter CES in Las Vegas. In VPI's room at the Sahara, a portly, black tonearm was sitting proudly atop the new VPI TNT Series 3 turntable. Pointing straight at me from the center of its massive, exceptionally stout frame was a tapered armtube the diameter of a swollen thumb. The fact that this unknown (to me) tonearm was chosen to sit atop a turntable as respected as the TNT told me I was looking at a serious new product. VPI's Harry Weisfeld was standing nearby, beaming as usual, to answer the barrage of questions that sprang from my lips as I leaned over for a closer inspection. Who? What? Where? When? Why? How much?

I don't think I've ever seen an audio debate as nasty as the one over Master Quality Authenticated (MQA), the audio-encoding/decoding technology from industry veterans Bob Stuart, formerly of Meridian and now CEO of MQA Ltd., and Peter Craven. Stuart is the company's public face, and that face has been the target of many a mud pie thrown since the technology went public two years ago. Some of MQA's critics are courteous—a few are even well-informed—but the nastiness on-line is unprecedented, in my experience.

"The fundamental problem of communication is that of reproducing at one point either exactly or approximately a message selected at another point."—Claude Shannon

Since its announcement at the end of 2014, Master Quality Authenticated, the MQA encoding/decoding system, has spawned outspoken criticism. Some of the more thoughtful negative reactions have come from engineers such as Dan Lavry, Bruno Putzeys, and Daniel Weiss. Others have been expressed by manufacturers of digital products: the late Charley Hansen at Ayre Acoustics, for example, along with Jason Stoddard and Mike Moffat at Schiit Audio, John Siau at Benchmark Media Systems, and Jim Collinson at Linn Products. Some have been audio writers: Doug Schneider, at SoundStage!, and Paul Miller and Jim Lesurf, at Hi-Fi News. Most vociferous have been anonymous website posters. As Jim Austin remarks in his examination of MQA's decoding of impulse-response data elsewhere in this issue, "the nastiness online is unprecedented."

Tuesday, December 12, 2–7pm, New York retailer In Living Stereo (2 Great Jones Street, Manhattan, NY 10003) is holding a special headphone event featuring the entire line of Audeze headphones, Woo Audio tube headphone amplifiers and the Hugo TT, Mojo, and new Poly wireless streamer for the Mojo from Chord Electronics.