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When it comes to amplifiers, ya gotcher tubes, yer solid-states, and yer hybrids. Although amplifier manufacturers would have you believe otherwise, the majority of designs within each category are variations on a few fairly-well-known themes. Everyone agrees that the power supply is extremely important. Most designers try to obtain the amplifier's desired frequency response and distortion characteristics with a minimum of negative feedback. It's also agreed—at least among designers of solid-state amps—that the ability to drive a variety of speakers, including those that present a low-impedance and/or reactive load, is an important priority.

An Audio Obstacle Course: The Shure Trackability Test Record
Shure Bros. TTR-101.

Shure's new "Supertrack" V-15 Type II pickup was designed as an answer to all those high-powered discs whose excessive modulations make them shatter all over the place on lesser pickups, But just in case anyone didn't happen to own any of these difficult discs, Shure decided to issue one of these, too. The result is a collection of some of the meanest modulations ever gathered together in one place.

For most people the terms hi-fi and stereo are synonymous, and yet it is clear that there is still a great deal of confusion over what the word "stereo" actually means. There isn't even a consensus of opinion amongst producers of records, designers of hi-fi equipment, audio critics and music lovers as to the purpose of stereo, and considering that the arguments show no sign of diminishing in intensity, it is instructive to realise that 1981 sees both the 100th anniversary of Clement Ader's first stereo experiments and the 50th anniversary of Alan Blumlein's classic patent on stereo.

Once upon a time, all audio equipment used vacuum tubes. In recent years, however, tubes have become the exclusive province of super high-end audio. It is more expensive to accomplish any particular task with tubes than with transistors, and few manufacturers (with the exception of Conrad-Johnson) seemed willing until now to refine their techniques and pare back their budgets to make tube components more affordable.

Chopin; Nocturnes
Arthur Rubinstein, piano
RCA Victor LSC-7050 (2 LPs) (reissued on CD as RCA Victor Red Seal 0902 663049-2). Max Wilcox, prod.; Tom MacCluskey, Sergio Marcotulli, engs. Recorded August 30–September 2, 1965, 2 February 21, 1967.

If these Nocturnes are never played better than this, we couldn't care less. These are exquisite performances!

The recording, via RCA Victor's Dynagroove process is a far cry from the earlier excesses that gave Dynagroove its horrid reputation among perfectionists. One is simply not aware of the recording at all, as long as it is played at the right volume, which is about what you would hear from a good first-balcony concert-hall seat.

Stop me if I've said this before (okay, I have): There's much to be said for integrated amplifiers. While separates have long dominated high-end audio, an increasing number of integrated products not only bundle a preamp and power amp, but sometimes add digital inputs of various flavors, phono stages, bass and treble controls (long on life support in audiophile gear), and more.

Lovers of high-resolution multichannel sound still don't have it easy. While the two-channel market is replete with snazzy, efficient music servers in stylish boxes, the only multichannel equivalents are Merging Technologies' Merging+Player Multichannel-8, and a handful of stereo devices that are rumored to do multichannel, though no such claims are made in print. To be candid, the latter will play multichannel tracks via USB, Ethernet, or HDMI outputs to suitable DACs (but that's another story), but because they're aimed at the two-channel market, they tend to skimp on the CPU horsepower and RAM needed to handle higher-resolution multichannel files. Even the Merging+Player Multichannel-8 ($13,500), with its Intel i3 CPU running Roon, couldn't entirely keep up with everything in my library.