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With the advent of home theater and Internet audio, doomsayers claim that high-end audio's days are numbered. But new high-end audio companies seem to appear at a rapid clip, and vinyl continues to thrive. So is high-end audio gasping for breath or breathing easy?

Many observers claim that high-end audio is an older person's passion, and that the youth of today are too enamored with third-rate MP3 sound and convenience. How can young listeners be brought into the high-end audio fold?

Until recently, all problems in digital audio systems were blamed on either the analog/digital converters (ADCs) used in mastering or the digital/analog converters (DACs) needed for playback (footnote 1). As the performance of both ADCs and DACs improved, however, a previously unrecognized mechanism for distortion was unmasked: jitter. As we shall see, jitter—or, more correctly, word-clock jitter—can be a significant limitation in the technical and sonic performance of digital audio systems (footnote 2).

Recently, we've seen the digital "horsepower" race accelerate with the arrival of digital sources and devices with 24-bit and 96kHz sampling capability. Much of this has been spurred by the 24/96 labels emblazoned on the newer DVD players&mdash;and, within the purer confines of the audio community, by high-end DACs with this same ability. Indeed, it's possible that the <A HREF="http://www.stereophile.com/digitalsourcereviews/259">dCS Elgar</A> DAC, near and dear to John Atkinson's heart and a perennial Class A selection in <I>Stereophile</I>'s "Recommended Components," performs so well with standard 16-bit/44.1kHz sources because its wider digital bandwidth permits greater linearity within the more restricted range of regular CDs.

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The advent of ubiquitous online digital audio file availability, not to mention a growing number of ways to effectively use a computer to organize and store a media library, has prompted futurists to begin declaring this the eve of the "digital den" era.