The dCS Purcell is named after Henry Purcell, the English composer, organist, bass, countertenor who was born in 1659 and died in, alas, 1695. It's a digital/digital converter intended for consumer use, as opposed to the less elegantly packaged pro-audio version, the dCS 972, that I reviewed in February 1999. Both devices increase the sample rate and/or word length of the output from linear PCM digital audio sources like CD or DVD up to a maximum sample rate of 192kHz and a word length of 24 bits. According to the extensive documentation, this is achieved by "using extremely powerful and accurate digital interpolation filters, which yield an output signal having negligible levels of distortion."
It's hard to know what the best strategy is for digital upgrades. Maybe you bought your first CD player when you became convinced that the format was going to succeed, and it seemed that players were about as good as they were going to get. Some time later, you tried one of the new outboard digital processors, and the sonic improvement was such that you just had to have it. Then you replaced the player itself with a CD transport, so you could benefit from improvements in servo control and digital output circuitry. At this point you were generally happy with your digital front-end—until you read about how 16-bit DACs (which is what your processor had) were old hat now that 20-bit DACs were available. But alas, your processor couldn't be upgraded, and was worth maybe 30% of what you'd paid for it. So you took a loss and bought a new-generation digital processor, and things were fine and dandy...for a while.
Prelude I fell in love with the original Link DAC, as was obvious from my review in the January 1999 Stereophile. I said that "the Link redefines entry into high-quality digital sound," as it provided excellent sound and 24-bit/96kHz conversion for the remarkably low price of $349. It is as firmly ensconced in Class C of "Recommended Components" as it is in my weekend system, where it tames the digital signals from my DMX receiver and my trusty old Pioneer PD-7100 CD player.
California Audio Labs is a child of the digital age. Originally, they made a noise by offering modified CD players with tube output stages, a practice for which I found no intellectual justification. On the other hand, the results were successful, even if (probably) due to the CAL units' softening of the harshness of early digital sound.
Unlike the imposing mbl and Burmester DACs that I review elsewhere in this issue, the Mark Levinson No.360 is New England conservative in appearance. Its operation was simple to master despite the sophistication and flexibility on tap. Flanked by Fasolt and Fafner, the Levinson No.360 seemed as amiable as Freia.
My first exposure to Burmester electronics was some years back at a New York Hi-Fi Show, where they were powering a pair of B&W 801s and impressed the hell out of me. But Burmester's distribution seemed sporadic and the prices beyond my consideration, so I put them out of my mind.
More than a decade ago, I bought a new pair of speakers and sought to find the most suitable cables for them. After auditioning a number of borrowed sets, I enlisted my daughter to confirm my selection. She grew up in a household where there was always good music playing on good equipment, but had no active interest in either. To placate Dad, she listened to a few of her own recordings with each of the various cables and then, lo and behold, reached the same conclusion I had. In fact, she described the differences almost exactly as I would have. I was ecstatic. Not only did it confirm my opinions about the cables, but it confirmed to me that any motivated listener can hear what golden-ear audiophiles obsess about. As I tried to express my joy to her, she left the room with this parting shot: "Yes, of course, but who cares?"
The Mark Levinson No.30 has enjoyed a continuing residence in Class A of Stereophile's "Recommended Components" listing since it was reviewed in our February 1992 issue (Vol.15 No.2). Madrigal includes the No.30 in its "Reference" series, by which they mean that the unit will not become obsolete. Thus, when new technology became available, the No.30.5 update was introduced, consisting of a single digital-receiver printed circuit board to replace the original's three boards, and a new digital-filtering board. This revision was favorably reviewed by Stereophile in October 1994 (Vol.17 No.10).
History teaches us that the full flowering of any social phenomenon takes place after the seeds of its destruction have been sown. That tourist magnet, London's Buckingham Palace, for example, was built decades after the English Revolution and the Restoration had redefined the role of the British monarchy as being merely titular, and made the elected Parliament the real seat of power.
The standalone digital/analog converter emerged as a product category in 1987 with the appearance of the Arcam Black Box and the Marantz CDA-94, closely followed by the PS Audio Link. The idea was that putting the sensitive D/A-conversion and analog stages in a separate enclosure with its own power supply would maximize the sound quality when compared with packing these circuits in the same box as the transport. However, it turned out that the routing of the digital data between transport and processor in the form of an S/PDIF- or AES/EBU-encoded bitstream could introduce word-clock jitterwhich undid much of the sonic advantages. (See "Bits is Bits" by Malcolm Hawksford and Chris Dunn, Stereophile, March 1996.)
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—and, within the purer confines of the audio community, by high-end DACs with this same ability. Indeed, it's possible that the dCS Elgar DAC, near and dear to John Atkinson's heart and a perennial Class A selection in Stereophile'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.
"They're cuuuute!" Not a very professional reaction, but what can I say? When the Monster Cable folks pulled out their new Entech Number Crunchers during a recent visit to Santa Fe, I couldn't help myself. I was edging John Atkinson and Wes Phillips out of the way, using my long arms to reach over...gotta get one! There would be time later for the critical evaluation and cool, detached objectivity—first, I had to get one. The Entechs are the Beanie Babies of the audio world
Perhaps I shouldn't have been surprised when I first spied the prototypes for Sonic Frontiers' luscious new digital combo, the Transport 3 CD transport and Processor 3 D/A processor, at HI-FI '97 in San Francisco. After all, this is the company whose meteoric rise from an electronic parts-supply outfit run out of president Chris Johnson's basement, to a large factory pumping out an impressive array of entry-level to crème de la crème tube electronic components, has elevated Sonic Frontiers to front-line status among high-end manufacturers.