Accuphase DP 600 Brochure

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Accuphase DP 600 Brochure

Extracted text from Accuphase DP 600 Brochure (Ocr-read)


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High-end integrated SA-CD/CD player - High-grade SA-CD/CD drive combined with exquisite disc tray and ultra-quiet disc loading mechanism ensures smooth operation. Innovative MDSD (Multiple Double Speed DSD) digital signal processing circuitry is con gured as moving average lter for straight D/A conversion. Completely separate con guration of transport and processor sections, each equipped with a set of HS-Link, coaxial, and optical connectors. The reference-level separate-type combo DP-800/ DC-801 and the integrated DP-700 with their exclusive mechanism developed in-house by Accuphase have garnered high praise and acclaim the world over. The new DP-600 is positioned as a companion model to the DP-700, benefi ting from its sophisticated know-how, but it is also a high-end integrated SA-CD player in its own right. Extensive listening tests were conducted to ensure optimum reproduction quality. As with all Accuphase players so far, a conscious decision was made not to support multi-channel formats but rather focus on obtaining the ultimate in musical fi delity from two-channel SA-CD music sources. The high-grade SA-CD drive mechanism in the DP-600 is the ultimate tool for extracting the information on SA-CD discs one hundred percent. It not only keeps internal vibrations of rotating parts to a minimum, but is also highly impervious to external vibrations. This ensures that the digital signal remains in a highly pure and accurate state. A dedicated DSP chip controls the digital servo, allowing the digital signal encoded on the SA-CD in DSD (Direct Stream Digital) format to be processed with utmost accuracy. The high-speed access mechanism with its single- lens/twin laser diode combines optimum precision with lightning-swift operation. In the digital processor section, ground-breaking MDSD (Multiple Double Speed DSD) technology is used, with an ultra-high-speed FPGA (Field Programmable Gate Array) and multiple DACs driven in parallel to handle the delayed DSD signal. After D/A conversion, summation of the multiple data results in an ingenious moving-average fi lter circuit that implements straight D/A conversion of the DSD signal. An important characteristic of MDSD is the use of MDS++ D/A converters which keep conversion errors to an absolute minimum. The MDSD circuit acts as a high-cut fi lter that virtually eliminates high-frequency quantization noise. DG-48 connection example The DG-48 can be connected between the transport outputs and digital inputs of the DP-600 (using HS-Link, coaxial, or optical connection). This allows sound field compensation of the signal from the CD transport in the digital domain. Features and Functions of Transport Section n High-grade SA-CD/CD drive Highly rigid and precise construction with sturdy, heavyweight chassis to absorb external vibrations -Traverse Mechanism- with fl oating design Massive bridge cover Non-resonant design and low center of gravity further reduce vibrations High-quality disc tray extruded from an aluminum block, plus super-quiet smooth disc loading mechanism n SA-CD/CD transport outputs ultra pure digital signal n Single-lens/twin pickup high- speed access mechanism n Support for text data display n Accuphase-s proprietary digital audio interface HS- Link (carries both SA-CD and CD signal) High-grade SA-CD/CD drive Bridge Traverse mechanism Disc tray Mechanism base DP-600 Block DiagramHS-Link Block Diagram Viscous dampers HS-Link cable HS-Link: Supports transmission of both SA-CD and CD signals Coaxial/optical fi ber: CD signals only Accuphase Exclusive Digital Interface HS-Link: High Speed Link HS-Link is an ultra high-quality digital audio interface developed by Accuphase using latest digital signal transmission technology. It supports send/receive verifi cation for copyright protection. The LVDS (Low Voltage Differential Signaling) principle allows a single dedicated HS-Link cable to transmit all audio data with utmost fi delity, including 2.8224 MHz/1-bit and 192 kHz/24-bit signals. Digital Inputs HS-Link Coaxial Optical HS-Link Decoder Coaxial Receiver Optical Receiver Interface Decoder VolumeVolume Up-sampler Up-samplerDelay Delay Delay Delay D/A Conversion D/A Conversion Motor & DriverCD Optical Head SA-CD Optical HeadDigital Signal Processor RF Signal Processor Digital Servo ProcessorInfrared Receiver Key MatrixOptical TransmitterCoaxial Transmitter Clock Generator Master Control Computer Digital Audio Interface Encoder DisplayLV D S Driver/ Receiver HS-Link Coaxial Optical Transport Outputs Left Analog Outputs Right Analog Outputs 5-Pole Butterworth Low-Pass Filter 5-Pole Butterworth Low-Pass Filter 5-Pole Butterworth Low-Pass Filter 5-Pole Butterworth Low-Pass Filter 5-Pole Butterworth Low-Pass Filter 5-Pole Butterworth Low-Pass Filter Unbalanced UnbalancedBalanced Balanced Digital Audio SignalTIA/EIA-644 LV D S Driver/Receiver HS-Link Encoder Security ControlRJ-45 Connector RJ-45 ConnectorHS-Link Decoder Security Control TIA/EIA-568A CAT.5 STRAIGHT CABLE TIA/EIA-644 LV D S Driver/ReceiverDigital Audio Signal From Remote Commander MDSD (Multiple Double Speed DSD) System MDSD (Multiple Double Speed DSD) System PCM Signal PCM Signal DSD Signal DSD Signal

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n Supplied remote commander RC-100 Gives access to various functions including direct play, repeat, pro- gram play, input switching, and level control. Innovative Digital Signal Processing: MDSD (Multiple Double Speed DSD) Digital Input DSD signal mReduces noise during volume processingm Shifts the effective fi lter frequency upwards Digital volume processing Volume Upsampler ×2 2.822 MHz/1-bit 5.6448 MHz/1-bit 5.6448 MHz/1-bit Delay Device Delay Device Delay Device Delay Device Delay Device Delayed by 1 clock cycle Normal Phase Output Reverse Phase Output -Moving-Average Filter- Circuit DAC output Linearity (Digital input vs. analog output) I (Current) - V (Voltage) Converter The DSD signal from the input is upsampled by a factor of 2, resulting in a sampling frequency of 5.6448 MHz/1-bit. After volume processing, the circuit performs D/A conversion using a highly ingenious moving-average fi lter principle. In the DP-600, this involves five delay devices and six MDS++ type D/A converters. The signal is delayed (shifted) progressively by one clock cycle to produce six signals which are sent to separate D/A converters for direct D/A conversion. The converted signals are then summed. Since conversion errors are kept to an absolute minimum by the use of MDS++ type DACs, the MDSD principle results in a 6-pole high-cut fi lter with perfectly linear phase characteristics. MDS++ D/A Conversion System Current SummingVoltage Summing Digital Input (dB) Analog output (dB)