New Sony Super Audio CD Player Unleashes Both Power And Nuance Of Music

In the early í80s, compact disc players and CDs changed the way people listened to music. Now, nearly 20 years later, a new type of CD is changing the essence of music again. Sony Electronics has introduced the SCD-1, the first player in the U.S. that supports the new Super Audio CD (SACD) format, an ultra-high fidelity digital music carrier specifically created for music enthusiasts. It features incredible two-channel performance along with full playback compatibility with existing CDs. The SCD-1 draws upon Sony's resident expertise in digital signal processing and laser optic design. This includes the development of the first CD player in 1982 as well as other innovative Sony digital audio products. ""The SCD-1 has the ability to convey the incredible sound quality associated with the SACD format,"" said Mike Fidler, Senior Vice President of Home Audio/Video Products at Sony Electronics. ""This player was created to meet the critical needs of the most demanding audiophiles who are seeking the highest level of music performance."" Advanced Processing TechnologiesThe SACD format is based upon Direct Stream Digitalô (DSD) processing, a technology that records music signals at a high sampling rate (2.8224 MHz) and converts them to 1-bit digital data. The result is an extremely accurate reproduction of the analog waveform generated by the original source. DSD technology reproduces music that is virtually free of artifacts and distortion associated with conventional digital Pulse Code Modulation (PCM) recording technology. The core of the SCD-1 is its newly developed DSD decoder LSI. The decoder first reads the invisible watermark found on all genuine SACD discs, then utilizes a high-capacity buffer memory to rearrange the output data as a continuous bitstream. The decoder also works in conjunction with the SCD-1's master clock, to achieve optimum converter performance.An Accurate Complement Pulse Density Modulation (ACP) system also helps maintain the DSD pulse values at a consistent level, by eliminating switching distortion associated with typical high-speed devices. As a further refinement, the SCD-1 utilizes a Synchronous Time Accuracy Controller (S-TACT). This clock generator uses discrete components to provide quartz precision accuracy without being affected by power supply noise and voltage fluctuations.Playback VersatilityOne of the cornerstones of the SCD-1 is its flexibility. Whether listening to new SACD titles or CDs, Sony's newest digital disc player brings out the best in each format. Like all SACD players, the SCD- 1 is capable of playing back three disc variations: a single high-density layer disc; a disc with dual high-density layers for longer music recordings; and a hybrid disc, which combines a high-density and standard-density (CD) layer. The hybrid disc can be played in both new SACD players and conventional CD hardware.While CDs and SACDs utilize different core technologies (PCM and DSD, respectively), the SCD-1 has the ability to handle the conversion requirements of both. It features Sony's latest Current Pulse D/A Converter, which transforms output voltage from the synchronous controller into a series of precision pulses. To enhance CD performance, the player also employs a new variable coefficient digital filter (VC24) that performs its calculations in 24-bit word length, for unprecedented accuracy. A new integrated circuit is used for RF signal processing. It works in synchronization with the player's demodulation and error correction systems. In addition, the SCD-1 utilizes an advanced GIC low-pass filter which plays a major role in determining overall sound quality. It avoids the use of semiconductors and other active elements, to ensure uniform high-frequency response, satisfying DSD's bandwidth requirements.Stable Drive SystemAs one would expect from such a high-caliber player, the SCD-1 incorporates a dual discrete optical pickup. Each lens has been optimized at different wavelengths for compatibility with both SACD and CD media. The optical block is housed in a fixed mechanism, which helps eliminate unwanted vibration. Furthermore, the block has been designed to avoid susceptibility to oscillation and works in conjunction with a highly accurate servo LSI that greatly reduces the effects of servo current on the pickup. The spindle motor is also made from highly rigid die-cast aluminum. For added durability, the motor stator contains a sapphire bearing, while the spindle shaft features a ruby bearing to reduce wear. The entire block is floated to reduce vibration--then mounted directly to the chassis with a minimal amount of dampers. Solid ConstructionThe SCD-1's construction provides enhanced stability and low vibration - two integral factors for overall sound quality and performance. The player features innovative base and pillar construction consisting of two five-millimeter thick metal plates as a base, along with a top plate, pillars and sidewalls comprised of high-carbon cast iron. Even the motor cover and floating mechanism are coated with special film that insulates against noise and vibration.The entire audio stage is mounted on a glass epoxy board, in a dual mono configuration. The discrete power supply is also contained in a resin-sealed case to reduce vibration and magnetic flux leakage. Separate left and right channel circuits are also utilized to achieve low impedance performance. The main circuit board is placed beneath the optical block in order to minimize pick-up transmission distance. Finally, the construction of the insulator feet, incorporating brass and cast iron, is another unique feature of the SCD-1 It includes pinpoint contacts areas that help dampen undesirable resonance. ""The ultra-high quality of the SACD format is matched perfectly with this player...it marks the beginning of an important chapter in audio history,"" Fidler noted. The SCD-1 will reach retailers' shelves in the U.S. this October for a suggested retail price of $5,000. For more information, contact David Migdal, Sony Electronics Inc. at 201 930 7394 or e-mail: david_migdal@m ail.sel.sony.com.