● High-grade SA-CD/CD drive ● MDSD type D/A converter using eight parallel
devices ● Support for playback of data discs (CD-R/-RW, DVD-R/-RW/+R/+RW)● Direct Balanced Filter with separate line and balanced signal paths ● HS-LINKand USB digital interfaces ● Transport outputs and digital inputs allow insertion ofDG-58 into signal path for sound field correction ● Phase selector for balanced
outputs ● Numeric indication of sampling frequency and quantization bits

The supreme integrated SA-CD/CD player
Accurately reads SA-CD
information and brings out the full splendor of great musical performances.
Quiet and ultra-smooth disc loading mechanism combined with a high-rigidity, high-precision SA-CD/CD drive extracts thefull scope of the recorded information. The innovative MDSD (Multiple Double Speed DSD) D/A converter comprises eight
MDS++ devices driven in parallel and a moving average filter to recreate an analog signal of stunning purity. The versatilearray of transport outputs and digital inputs enables connection of a voicing equalizer or other equipment in the digitaldomain. Harnessing the latest technology in a masterful ensemble, the DP-750 goes straight to the heart of the music.
Features and Functions of Transport Section■ Advanced technology for accurate information retrieval
The newly developed SA-CD/CD drive with a total weight of 10.5 kg ismounted on a massive 8-mm thick bottom plate, resulting in highly efficientattenuation of external vibrations. Intensive research into materials andstructural design is reflected in the traverse mechanism supported by four
viscous dampers. This protects the pickup from resonances and enables itto perform its crucial task, ensuring highly precise data readout at all times.
■ Quiet operation with sound level reduced to 1/2
Even very slight eccentricities or warping of media discs often can leadto various types of vibrations and wind noise when spinning at highspeed. The viscous dampers of the DP-750 prevent the propagation ofsuch vibrations, and the large bridge covering the disc cuts down on
wind noise. As a result, operation noise is reduced to about one half ascompared to earlier designs, making listeners forget that there is arotating mechanism at all.
■ Silky smooth loading
The disc loading mechanism features a dual stay construction with steel
bearings for the shafts. This ensures that the aluminum disc tray opens
and closes with a super-quiet and smooth motion.

High-grade SA-CD/CD drive
Aluminum alloy bridge
8 mm thickaluminum frame

Traverse mechanism

Disc tray

Mechanism
base

Dual stay bearing shafts
8 mm thick heavyweightbottom plate

Traverse mechanism supported by viscous dampers

Viscous dampers

Features and Functions of Digital Processor Section
FPGA

MDS＋＋ D/A Conversion System
Normal phase
output

DAC 1
DAC 2
DAC 3
DAC 4

High-performance
ES9028PRO DAC chip

I-VDAC 5I-V

DAC 7

Shifted by 1/2 clock cycle each

Normal phase
output

DAC 8I-V
Reverse phase
outputCurrent
summing■ Block diagram of MDSD principle
THD+NOISE vs FREQUENCY－Voltage
sourceDAC 6[%]
0.01
0.007
0.005

＋

Analog output

I (current) /V (voltage)
conversion

Voltagesumming

LINEARITY

Analog output [dB]0−200.003
0.002

−40
−60

0.001
0.00070.0005−80−100

0.00030.0002−1200.0001
20 30 50

100 2005001k2k 3k 5k7k 10k 20k[Hz]Total harmonic distortion (incl. noise)vs. frequency response■ Assembly with digital signal processing circuits, D/A converter, transport
control circuits etc.

Glass cloth fluorocarbon resin PCB
with Direct Balanced Filter circuitry

I-V
Reverse phase
outputVoltagesource

DSD input signal

Delay device■ MDSD principle
Because the DSD signal comprises a high amount of noiseat frequencies beyond the audible range, a digital filter isnecessary to remove these noise components. In
conventional designs, the DSD signal is first converted toPCM before being routed to a digital filter. The DP-750 bycontrast employs the MDSD principle where eighttime-shifted DSD signals are generated and supplied straightto eight MDS++ type D/A converters arranged in a parallel
configuration. The entire circuitry thereby functions as amoving average filter with perfectly linear phasecharacteristics. This revolutionary approach enables
thorough removal of noise components without having toconvert the DSD signal into PCM form at all.
■ MDS++ topology with eight devices
Eight high-performance DAC chips (ES9028PRO from ESS
Technology Inc.) are driven in parallel, thereby improving
overall performance by a factor of about 2.8 (=√8), as
compared to a single converter circuit. Because theperformance improvement afforded by the MDS++ principle
is independent of signal frequency and signal level, output
signal noise at very low levels is also successfully minimized,a feat that is very difficult to achieve with conventionaldelta-sigma converters.
■ Direct Balanced Filter circuit
Because the Direct Balanced Filter provides completely
separate circuits for the line and balanced outputs, nounwanted interaction will occur, even if both are connected at
the same time. (In order to prevent noise, the sameequipment should not be connected via both the line output
and balanced output.)■ Glass fluorocarbon resin PCB
For optimum sound quality, the printed circuit board for theDirect Balanced Filter circuitry is made from glass cloth
fluorocarbon resin with low dielectric constant and minimumloss.

−140−140−120

−100

−80

−60

−40−200
Digital input [dB]Linearity (digital input vs. analog output)

■ Strong power supply
Two separate power transformers for the analog anddigital sections, along with four smoothing capacitors(15,000 μF / 25 V) developed specifically for the DP-750
and designed for optimum sound quality ensure highly
accurate and stable signal output.

Sampling frequency and quantization bit display■ Sampling frequency and quantization bit display
In addition to track numbers and elapsed playing time,the display can also show the sampling frequency andthe number of quantization bits.

Digital level control allows adjustment down to – 80 dB■ Digital level control allows adjustment down to –80 dB
This capability is useful for example to precisely matchthe output level to other components in the system.
■ Data disc support
The DP-750 can also play CD-R/-RW, DVD-R/-RW/+R/+RW discs. Supported file formats are WAV, FLAC,DSF, and DSDIFF.

Strong power supply
SA-CD
OpticalHead■ Versatile digital inputs
The array of digital inputs includes HS-LINK (Ver. 1 andVer. 2), COAXIAL, OPTICAL, and USB.

SA-CD/CD■ Elegant wood cabinet
The exquisite wood cabinet with natural grain finish
creates an air of sophisticated elegance that complements any listening room.

CDOptical
HeadRF
Signal
Processor

Motor&Driver

DigitalServoProcessor

Infrared
ReceiverFrom
Remote Commander

ClockGenerator

OpticalTransmitter

OpticalDigital AudioInterfaceEncoder

CoaxialTransmitter

Coaxial

LVDS
DriverHS-LINK

MasterControlComputer

KeyMatrix

Delay
DSD Signal

USB

MDS＋＋
D/A Conversion

DAC

×8

5-PoleButterworth
Low-Pass Filter

OpticalReceiverCoaxial

CoaxialReceiver

HS-LINK

HS-LINK
DecoderLine
Left
AnalogOutputs

5-PoleButterworth
Low-Pass Filter

USB
ReceiverOpticalDigitalInputsDelay

Transport
Outputs

Display

MDSD (Multiple Double Speed DSD) System■ Insulators designed for sound quality
The "Advanced High Carbon" cast iron insulator feetpossess superior damping characteristics for blocking
external vibrations.
■ Balanced output phaseselector
This allows matching thepolarity to that of connectedequipment.

DigitalSignal
Processor

Balanced
5-PoleButterworth
Low-Pass Filter

PCM Signal

Interface
Decoder

MDSD (Multiple Double Speed DSD) SystemDelay
DSD Signal

Delay

MDS＋＋
D/A Conversion

DAC×8

5-PoleButterworth
Low-Pass Filter

LineRightAnalog
Outputs

5-PoleButterworth
Low-Pass Filter

Balanced
PCM Signal

Phase selector■ Supplied remote commander RC-120
Gives access to various functions
including direct play, repeat play,
input switching, and level control.

5-PoleButterworth
Low-Pass Filter■ DP-750 Block Diagram

Using the USB port

About HS-LINK Ver. 2
HS-LINK Version 2 is a further enhanced version of the Accuphase HS-LINK interface, providing expanded sampling frequency and quantization support.
● The DP-750 supports both HS-LINK Ver. 1 and HS-LINK Ver. 2 signal transmission.
Format(2-channel)

Input

Numberof bits

Sampling frequency

HS-LINK（Ver.1）

DSD

2.8224 MHz

PCM

32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

1HS-LINK(Ver. 2)

DSD

2.8224 MHz / 5.6448 MHz

PCM

32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz

16 to 24

The USB port (Type B) of the DP-750 allows connection toa computer via USB cable, for reproduction of music librarydata. Because sampling frequencies up to 384 kHz / 32-bit
and 11.2896 MHz / 1-bit DSD (ASIO only) are supported,even very high-resolution music files can be reproducedwith impeccable sound quality.

1
16 to 32

＊ HS-LINK cable can be used both for HS-LINK Ver. 1 and HS-LINK Ver. 2 signal transmission.
＊ With HS-LINK Ver. 2, the data and clock signal are transmitted separately, and high sampling frequencies up to 5.6448 MHz 1-bit DSD and 384 kHz 32-bit PCM are supported.
Digital
Audio
SignalHS-LINK
Encoder

HS-LINK
Decoder

Security
Control

TIA/EIA-644 LVDS
Driver/Receiver

RJ-45Connector

HS-LINK
cable

RJ-45
Connector

Digital
Audio
SignalUSB

PC

USB 2.0 cable withType B connector

Security
Control
TIA/EIA-644 LVDS
Driver/Receiver
MasterClock

MasterClock＊ Depending on the computer, it may
be necessary to install software forusing the USB port from thesupplied "USB Utility 3" CD-ROM.
＊ The capability for playback of music
data via USB depends on the operating system and music playback
software of the computer.
＊ For information on settings for USB,refer to the computer documentation.

USB

HS-LINK Ver. 2 Signal Transmission Block Diagram

DG-58 connection example

DP-750Analog output

The DG-58 can be connected between the transport outputs and digital inputs of the DP-750 (using the HS-LINK, coaxial, or opticalconnectors). This allows sound field compensation of the signal from the CD transport of the DP-750 in the digital domain.
DIGITAL OUT

HS-LINK cable connection supports transmission of both SA-CD and CD signals.

HS-LINKcable

DIGITAL IN

DG-58

DIGITALINPUTS● Set to HS-LINK (Ver. 1)

DP-750

Audio cable

Balanced connection example

TRANSPORTOUTPUTS

USB port (Type B)

Front Panel

Rear Panel

Input indicator Frequency indicator
Repeat indicator
Total number of tracks /Current track /Time indicator
Quantization
bits
readout
sampling frequency
Output level
readout

Power switch
SA-CD/CD selector button
Input selector button
Disc tray

Preamplifier

Play button
Pause button
Track search buttons
BACK,NEXTFastReverse

Digital inputs
HS-LINK COAXIAL
OPTICAL USB

Analog outputs BALANCED LINE
Balanced output connectors Pin ② –, Pin ③ +(Can be changed with phase selector switch)Line output connectors

Transport outputs
HS-LINK COAXIAL
OPTICAL

FastForward

Balanced output
phase selector

AC power supply
connector★

Stop button

Disc tray open/close button

Guaranteed Specifications[Guaranteed specifications measured according to JEITA standard CP-2402A / Measurement disc: PHILIPS 3122-783-00632]

Transport Section

Compatible Disc Formats 2-channel Super Audio CD
CD
DSD disc DVD-R/-RW/+R/+RW (DSF file format)
Data disc CD-R/-RW, DVD-R/-RW/+R/+RW(Supported formats: WAV, FLAC, DSF, DSDIFF)
Data Read Principle
Non-contact optical pickup
Laser Diode Wavelength SA-CD： 655 nm
CD：790 nm
Transport Outputs
OutputFormatSuitable cable
Proprietary standard
HS-LINK
Dedicated HS-LINK cable
OPTICAL JEITA CP-1212 compliant
JEITA standard optical fiber cable
COAXIAL IEC 60958 compliant
75-ohm coaxial digital cable

Digital Processor Section
Digital Inputs
Input
HS-LINKUSBOPTICAL
COAXIAL

Format
Proprietary standard
USB 2.0 Hi-Speed (480 Mbps) compliant
JEITA CP-1212 compliant
IEC 60958 compliantSupplied accessories

Suitable cable
Dedicated HS-LINK cable
USB 2.0 cable with Type B connector
JEITA standard optical fiber cable
75-ohm coaxial digital cable

D/A Converter
Frequency Response
THD + Noise
Signal-to-Noise Ratio
Dynamic Range
Channel Separation
Output Voltageand Impedance
Output Level Control● USB Utility 3 CD

● Remote Commander RC-120● Cleaning cloth● USB Utility 3 Setup Guide

D/A Converter CD playback and external input (PCM): 8 MDS++ type
SA-CD playback and external input (DSD):
8 MDSD type
0.5 to 50,000 Hz+0, –3.0 dB0.0005% (20 to 20,000 Hz)
120 dB117 dB
118 dB (20 to 20,000 Hz)
BALANCED： 2.5 V 50 ohms, balanced XLR typeLINE：
2.5 V 50 ohms, RCA phono jack
0 dB to –80 dB in 1-dB steps (digital)

GeneralPower Requirements

120 V, 220 V, 230 V AC (voltage as indicated on rear panel), 50/60 Hz

Maximum Dimensions

Width
477 mm ( 18.8")
Height
156 mm ( 6.1")
Depth
394 mm ( 15.5")
28.2 kg (62.2 lbs) net
35.0 kg (77.2 lbs) in shipping carton

Power Consumption● AC power cord

● Audio cable with plugs ASL-10

Sampling Frequencies
Input
Sampling frequency
FormatNumber of bits
1
HS-LINK DSD 2.8224 MHz（Ver.1）
16 to 24
PCM 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
2.8224/5.6448
MHz1DSD
HS-LINK(Ver.2)16 to 32
PCM 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz
1
DSD 2.8224 / 5.6448 / 11.2896 MHz (ASIO only)USB
16 to 32
PCM 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz
16 to 24
OPTICAL PCM 32 / 44.1 / 48 / 88.2 / 96 kHz
16 to 24
COAXIAL PCM 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

Mass26 W

Remarks★ This product is available in versions for 120/220/230 V AC. Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.
★ The 230 V version has an Eco Mode that switches power off after 120 minutes of inactivity.
★ The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country.

●The specifications and appearance of this product are subject to change without notice.

5年間保証

F1805Y PRINTED IN JAPAN 850-2210-00（B1）