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Four short years ago, rock band Metallica angered part of its fan base by <A HREF="http://www.stereophile.com/news/10746/index.html">going after</A> downloaders who used the online file-trading service Napster. At that time, the band provided Napster with the screen names of 335,000 users reputed to be pirating Metallica's music, and demanded they be removed from the service. The group was also the <A HREF="http://www.stereophile.com/news/10725/">first to sue</A> the fledgling company.

One of my mentors, John Crabbe&mdash;my predecessor as editor of the English magazine <I>Hi-Fi News</I>&mdash;used to insist that a magazine's soul is its "Letters" column. If a magazine was able to publish a lively collection of readers' letters, said John, it would enjoy a lengthy life. Conversely, if its letters column was dull or nonexistent, then no matter how much advertising it had or how many readers it could boast, it was just a matter of time before it had the lid shut on it. In the 28 years since John told me this, I have not found an exception. The kicker, of course, is that there's no easy way of ensuring that a magazine has lively letters to publish.

Over time I've successfully used a variety of tuning devices to refine the acoustics in Kathleen's and my listening room. But I've always suspected that <A HREF="http://www.stereophile.com/accessoryreviews/215">Acoustic Science's Tube Traps</A> might be a good way to finish it off. I've occasionally asked visitors to stand in one spot or another behind the speakers as I listened for tergiversation (<I>ie</I>, "to change one's tune"; Hoo-hah!). I found several locations where a nice, dense audiophile body made an improvement to the sound.

Jitter is not what digital sound quality induces in the listener; rather it is the instability in the clock signal that controls exactly <I>when</I> the analog waveform is sampled in the original A/D conversion, or when the digital word input into a DAC results in an analog voltage being produced at the chip's output. "So what?" is the response of digital advocates, "As long as a digital one is recognized as a one and a digital zero as a zero, then how can there be any difference in sound?" goes their argument, normally culminating in a fervently expressed "Bits is bits!"

Its future as a format may be debatable, but does SACD have the sonic goods? Have you been able to spend much time with SACD? If so, what do you think about the way it sounds?

In its nearly two decades, Benicia, CA&ndash;based loudspeaker manufacturer <A HREF="http://www.nhthifi.com/">NHT</A&gt; has earned a well-deserved reputation for affordable high-performance products, among them legendary mini-monitors, such as the <A HREF="http://www.stereophile.com/loudspeakerreviews/804">Super Zero</A> and Super One, as well as its full-range Model 3.3. Founded by Ken Kantor and Chris Byrne in 1986, the company was sold to Jensen International in the early 1990s, spun off to packaged goods specialist Recoton, and acquired by Rockford Corporation in the final days of 2002&mdash;an event that saved NHT from an uncertain fate.

John Atkinson headed to the Midwest last year to record another audiophile disc. In <A HREF="http://www.stereophile.com/musicrecordings/304deep"><I>Deep River</I>: the Cantus Spirituals Project</A>, JA describes the process of capturing a chorus of male voices with high-rez digital equipment. Atkinson notes, "Presented with the magnificent acoustic of Sioux Falls' 1500-seat Washington Pavilion of the Arts & Sciences, the question facing me was how to present what are still fairly intimate works while taking advantage of that supportive acoustic."