Accuphase DP 800 Brochure

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Accuphase DP 800 Brochure

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PRECISION SA-CD TRANSPORT Newly developed high-rigidity, high-precision SA-CD/CD drive Dedicated digital-output SA-CD/CD transport – Totally new ultra-massive SA-CD/CD drive. Highly rigid, high-precision construction with low center of gravity absorbs vi- brations. Finely machined and utterly smooth disc loading mechanism with exquisite tray. High-performance digital audio interface HS-Link. In order to extract the minute bits of information from the rapidly spinning disc and decode these accurately into a digital signal of high purity, vibrations emanating from the rotating medium as well as any external mechanical vibrations must be minimized. At the same time, the prevention of resonances is also highly important. In the DP-800, the SA-CD/CD drive is mounted fi rmly to a strong aluminum frame, and the drive loading mechanism and mechanical base form a massive and highly rigid chassis constructed with utmost precision. Conversely, the traverse mechanism, an integrated structure consisting of the optical assembly including laser pickup and rotating parts, is designed for extremely light weight, and isolated from the mechanism base by a fl oating suspension arrangement. Specially selected material is used for viscous damping, supporting the traverse mechanism at four points. A large, heavy bridge machined from a single block of aluminum is joined to the mechanism base for integrated reinforcement. The entire SA-CD/CD drive assembly is directly mounted to the bottom chassis. The resulting unit has a very low center of gravity and affords excellent protection against all kinds of adverse infl uences from vibrations. Perfectly stable and quiet operation produces a signal of utmost accuracy. Sturdy, heavyweight chassis absorbs external vi- brations Highly rigid and precise construction “Traverse Mechanism” with fl oating design and viscous damping Integrated construction with oversize heavyweight aluminum alloy bridge mounted to mechanism base Low center of gravity further reduces vibrations High-quality disc tray extruded from an aluminum block, plus super-quiet smooth disc loading mech- anism “Advanced High Carbon” cast iron insulators with excellent absorption characteristics control vibra- tions to ensure high sound quality High-rigidity, high-precision SA-CD/CD drive Aluminum alloy bridge Traverse mechanism Disc tray Mechanism base Viscous dampers “Advanced High Carbon” cast iron insulators for best sound quality For some time now, Accuphase engineers have been engaged in an ambitious in-house development project: to create the ultimate SA-CD drive. With the introduction of the DP-800, this project has now come to fruition, culminating in the SA-CD transport mechanism incorporated in this model. Compared to a CD drive, an SA-CD drive has a higher revolution rate, and pickup positioning accuracy as well as suppression of vibrations must be of a higher order, to allow full access to the enormous amount of information stored on the disc. This in turn places formidable requirements on the mechanical construction of the drive. The transport in the DP-800 meets these challenges in impressive fashion, being designed to extract the information on the SA-CD one-hundred percent. The product demonstrates ultimate mechanical precision matched with ingenuity and the famous Accuphase dedication to sonic excellence. The ultra-massive SA- CD drive combines superior rigidity with rock-stable accuracy. Truly a monumental event in the world of high- end audio. In the transport, a digital servo with a dedicated DSP assures accurate readout of the signal recorded on the SA-CD using the DSD (Direct Stream Digital) principle. This is sustained by a single-lens/twin laser diode pickup mounted to a high-speed access mechanism. The transport not only realizes optimal reproduction of SA-CDs, it also is capable of extracting a super- accurate signal from conventional CDs. The output for both SA-CD and CD is provided via the Accuphase exclusive high-performance digital interface HS-Link (RJ-45 connector), while the CD output is also available via a coaxial connector. The HS-Link cable supplied with the DP-800 can be used for connection to the DC-801 or to other components. DP-800 Features and Functions Newly developed high-rigidity, high-precision SA-CD/CD drive SA-CD transport supplies remarkably pure digital signal Excellent signal quality also from conven- tional CD media Single-lens/twin pickup high-speed access mechanism Support for text data display Accuphase’s proprietary digital audio interface HS-Link (carries both SA-CD and CD signal) Dedicated coaxial output for CD signal Power-on play feature allows automatic playback Remote commander RC-100 (supplied with DP-800) • Controls DP-800 functions such as direct play, program play, repeat, etc. • Controls DC-801 functions such as input switching and output level adjustment Both DP-800 and DC-801 feature massive cabinets made of persim- mons wood Digital signal processing assembly Power supply assembly HS-Link connector and coaxial output assembly Block diagram of DP-800