AccuphaseCombo DP-900 & DC901 Accuphase Combo DP-900 & DC901  220-240 Vlike new, original boxes, light use. One of the best combo cd player + DAC in the world! for paypal add 4% DP 900 The SA-CD drive in the DP-900 was developed in-house by Accuphase to assure the b...18200.00

Accuphase Combo DP-900 & DC901 220-240 V [Expired]


no longer for sale

like new, original boxes, light use. One of the best combo cd player + DAC in the world! for paypal add 4% DP 900 The SA-CD drive in the DP-900 was developed in-house by Accuphase to assure the best possible performance. Its ultra-massive design combines superior rigidity with outstanding accuracy. 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. 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 mechanism 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). The CD output is also available via a dedicated coaxial connector. Dedicated digital output only SA-CD/CD transport with ultra-high-speed FPGA for digital processing and highly accurate signal pickup. Ultra massive chassis construction and newly developed high-rigidity, high-precision SA-CD/CD drive. Sophisticated signal processing technology assures excellent signal quality also from conventional CD media. Single-lens/twin pickup high-speed access mechanism employs two laser diodes, one for SA-CD (650 nm) and one for CD (780 nm). Accuphase’s proprietary high-quality digital audio interface HS-LINK. RJ-45 output (HS-LINK) for SA-CD and CD, and dedicated coaxial output for CD. HSLINK connection to DC-901 can carry both SA-CD and CD signals. Power supply with two high-efficiency toroidal transformers and custom-made high quality filtering capacitors (3000μF × 10) allows separate powering of signal processing circuitry and drive section. Display can show text data with disc title, artist information, etc. “High Carbon” cast iron insulator feet with superior damping characteristics ensure quiet operation of both DP-900 and DC-901, and further enhance sound quality. Both DP-900 and DC-901 feature massive cabinets with wood finish. The SA-CD drive in the DP-900 was developed in-house by Accuphase to assure the best possible performance. Its ultra-massive design combines superior rigidity with outstanding accuracy. 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. 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 mechanism 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). The CD output is also available via a dedicated coaxial connector. DC901 The DC-901 showcases Accuphase’s mastery of sophisticated digital technology and creative circuit topology. It is a digital processor designed to bring out everything the SA-CD format has to offer. A new technique called MDSD allows straight D/A conversion of the DSD signal. Multiple DSD signals delayed through digital processing in an ultra-high-speed FPGA are converted by separate D/A converters. After D/A conversion, summation of the multiple data is performed, resulting in an ingenious moving-average filter circuit with double-speed accuracy. An important characteristic of MDSD is the use of MDS type D/A converters which keeps conversion errors to an absolute minimum. At the same time, the MDSD circuit acts as a high-cut filter with completely linear phase characteristics. The end result is a digital signal of outstanding quality, allowing the music to emerge in perfect clarity, demonstrating the ultimate potential of the SA-CD format. Ultra-high-speed FPGA harnesses digital processing power to implement innovative MDSD reproduction with double-speed high-precision moving-average filter circuit. Sixteen MDS type D/A converters driven in parallel. Each channel uses two Hyperstream™ DAC chips (ES9018) in parallel. “Direct Balanced Filter” performs totally separate analog low-pass filtering for line and balanced signal paths. D/A converter printed circuit boards made from glass fluorocarbon resin with low dielectric constant and low loss. EXTERNAL DSP input/output connectors (HS-LINK and optical) allow ion of DG-58 in signal path. Seven digital inputs: HS-LINK, balanced, coaxial (2), optical (2), USB. Coaxial and optical digital outputs. Line and balanced analog outputs. Phase selector switch for balanced output. Completely separate construction of digital and analog sections, each powered by a dedicated high-efficiency toroidal transformer.
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