MDS SA-CD PLAYER● High-grade SA-CD/CD drive ● MDS+ type D/A converter with four parallel
circuits ● Direct Balanced Filter with separate line and balanced signal paths● Programmable playlist ● Sampling frequency and quantization bit display● Data disc playback ● Numerous transport outputs and digital inputs ● Digitalconnection with voicing equalizers ● Phase selector for balanced outputs

A high-quality integrated SA-CD/CD player born froma synthesis of the latest technologies

Equipped with quiet and smooth disc loading, the high rigidity and low center of gravity of the SA-CD/CDdrive vastly improves readability, while the MDS+ type D/A converter with four parallel circuits accurately
reads disc information and converts analog signals. It also supports a digital connection with a voicing
equalizer and provides a programmable playlist feature that lets you enjoy listening in the order you prefer.
Enjoy listening to the DP-570, the next step in the pursuit of the ideal disc playback experience.

The Technology of Precision
Features and Functions of Transport Section■ Accurate Reading
A high-rigidity SA-CD/CD drive mounted on a triple layer bottom platewith exceptional vibration reduction properties and all supported byhigh-carbon cast iron insulators. This configuration creates a strong
integrated structure that suppresses the effect of external vibrations
on the traverse mechanism. Four newly developed high-quality butyl“elastic dampers” connect the traverse and disc mechanisms, drasticallyreducing external vibrations from being transmitted to the traverse
mechanism and protecting the lens actuator that reads discs. Music
information is read accurately thanks to these vibration protection
technologies and then sent to the digital processor.

■ Quiet Operation
Vibrations from spinning discs are typically transmitted to the chassis,
which then resonates and amplifies the operational sounds. The“elastic dampers” on the traverse mechanism greatly reduce chassis
resonance. The five-layer large bridge cover surrounding the traverse
mechanism also shields against air-vibration noise from high-speed
rotation. This improvement allows the DP-570 to operate quietly without
being affected by rotation.

■ High-rigidity, high-precision
SA-CD/CD drive
Large bridge coverTraverse
mechanism

MechanismbaseDisc tray

■ Smooth loadingCarved from an aluminum block and then finished by a hard anodized
aluminum and satin treatment, the elegant and elaborate disc tray
uses steel bearing shafts to open and close smoothly and quietly.

Viscousdampers

Traverse mechanism

Objective lens and actuator

Features and Functions of the Digital Processor Section■ MDS+ type D/A converter with four parallel circuits
The MDS+ (Multiple Delta Sigma+) conversion principle is a revolutionary
D/A conversion routing that employs multiple delta-sigma type D/Aconverters connected in parallel for drastically improved performance.
By driving four outputs from a high-performance ES9028PRO DAC
chip (ESS Technologies) in parallel, the DP-570 almost doubles (=√4)
overall performance for distortion, noise, linearity, and more. Because
the improvements provided by the MDS principle are independent ofsignal frequency and level, output signal noise at very low levels isalso minimized, a feat that conventional delta-sigma converters findextremely difficult to achieve.

(Normal phaseoutput)

I (current) -V (voltage) conversion

I-V

DAC 1(Reverse phaseoutput)

DAC 2
CurrentSource

Digital InputSubtraction

I-V

Current summing

4 circuits driven in parallel

High-performance ES9028PRO DAC chip

■ MDS+ principle block diagram■ Direct Balanced Filter circuit
By making the line output circuits andbalance output circuits independent ofeach other, the Direct Balanced Filtercircuit does not affect the output signal
even with two preamplifiers connected.

0.01

THD+NOISE vs FREQUENCYLINEARITY
00.0070.005−200.003−400.002

Filter amplifier assembly−600.001
0.0007−800.0005■ High-precision clock playback−1000.0003
0.0002The high-performance (digital) audio interface
chip AK4118A (Asahi Kasei Microdevices)
drastically reduces jitter for high-precision clock
playback.

0.0001
20 30

AK4118A−DAC 3DAC 4

DAC assembly

DAC output+−12050 70 100

2005001K

2K 3K

5K 7K 10K

20K

Total harmonic distortion(incl. noise) vs. frequency response−140−140−120−100−80−60−40−200Linearity (digital input vs. analog output)

Advanced features■ High-grade SA-CD/CD drive■ MDS+ type D/A converter with four parallel circuits■ Direct Balanced Filter with independent line andbalanced signal paths■ Power supply using analog circuits in a discreteconfiguration for low noise■ Large power transformer with separate analog anddigital windings■ Customized smoothing capacitors for optimum soundquality■ Programmable playlists■ Display with sampling frequency and number ofquantization bits
■ Playback of DVD-R and other data discs containing
music files■ Output level control allows adjustment down to −80 dB■ Digital interface for Accuphase Voicing Equalizer■ Abundant transport outputs (HS-LINK, OPTICAL,COAXIAL)■ Abundant digital inputs (HS-LINK, USB, OPTICAL,COAXIAL)■ 2 (balanced, line) analog outputs■ Balanced output phase selector■ Aluminum hairline finish top plate

Sampling frequency and quantization bit display

Digital level control allows adjustment down to −80 dB

Digital assembly

SA-CD / CD

DigitalSignal
Processor

CD
OpticalHead

RFSignal
Processor

Motor&Driver

DigitalServo
Processor

Infrared
ReceiverMDS＋
D/A Conversion
System⊿Σ DAC×4USB

USB
ReceiverOptical

OpticalReceiverCoaxialPhase selector
HS-LINK■ Supplied remotecommander RC-140

SA-CD
OpticalHeadFrom
Remote CommanderDigitalInputs

Aluminum hairlinefinish top plate

Power supply assembly

CoaxialReceiver

HS-LINK
Decoder

Clock
Generator

OpticalTransmitter

OpticalDigital Audio
Interface
Encoder

CoaxialTransmitter

Coaxial

LVDS
Driver/Receiver

HS-LINK

MasterControlComputerKey
MatrixTransport
Outputs

Display
5-PoleButterworth
Low-Pass Filter

Line

Left
AnalogOutputs

5-PoleButterworth
Low-Pass Filter
Balanced

5-PoleButterworth
Low-Pass Filter
Interface
Decoder

MDS＋
D/A Conversion
System⊿Σ DAC
×4

5-PoleButterworth
Low-Pass Filter

Line

Right
AnalogOutputs

5-PoleButterworth
Low-Pass Filter
Balanced

5-PoleButterworth
Low-Pass Filter■ Block diagram

About HS-LINK Version 2

Using the USB port

HS-LINK Version 2 is an enhanced version of the Accuphase HS-LINK interface, providing expanded sampling frequency and quantization support.

Because sampling frequencies up to 384 kHz /32-bit and 11.2 MHz / 1-bit DSD (11.2 MHz is for
ASIO only) are supported, even very high-resolution music files can be reproduced with
impeccable sound quality.

● The DP-570 supports both HS-LINK Ver. 1 and HS-LINK Ver. 2 signal transmissions.

InputFormat(2-channel)

HS-LINK(Ver. 1)
HS-LINK(Ver. 2)Numberof bits

Sampling Frequencies

DSD

2.8 MHzPCM

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

1DSD

2.8 / 5.6 MHz

PCM

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

116〜32＊HS-LINK cables can be used both for HS-LINK Ver. 1 and HS-LINK Ver. 2 signal transmissions.
＊With HS-LINK Ver. 2, the data and clock signals are transmitted separately, and high sampling frequencies up to 5.6 MHz 1-bit DSD and 384 kHz 32-bit PCM are supported.
DigitalAudio
SignalHS-LINK
Encoder

HS-LINKDecoder

Security
Control

HS-LINKcable

RJ-45
Connector

TIA/EIA-644 LVDS
Driver/Receiver＊Depending on the computer,it may be necessary to install
the necessary software fromthe supplied “USB Utility 3”
CD-ROM.
＊Playback of music data via
USB depends on the operating system and software onthe computer.
＊For information on settings forUSB, refer to the computer
documentation.

16〜24

RJ-45
Connector

DigitalAudio
SignalPC

USB

USB 2.0 cable withType B connector

Security
Control
TIA/EIA-644 LVDS
Driver/ReceiverUSB

MasterClockMasterClock■ HS-LINK Ver. 2 Signal Transmission Block DiagramDP-570

Voicing equalizer connection example

Analog output

A voicing equalizer can be connected between the transport outputs and digital inputs of the DP-570 (using theHS-LINK, coaxial, or optical connectors). This allows for sound field compensation of the signal from the CD transport
output as a digital signal.
DP-570
DIGITAL OUT

Voicing equalizer

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

TRANSPORTOUTPUTSHS-LINK cable

DIGITAL IN

Input button
Disc tray

Preamplifier

Rear Panel

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

SA-CD/CD button

Balanced connection example

USB port (Type B)

Front Panel

Power switch

Audio cable

DIGITALINPUTS

Play button
Pause button
Back / Next

Open / Close button

Fast Reverse

Stop button
buttons

Digital inputs HS-LINK /COAXIAL / OPTICAL / USB

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

Transport outputs HS-LINK /COAXIAL / OPTICAL

Balanced output
phase selector

AC power
supply connector

Fast Forward

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

2-channel Super Audio CD
CD
Compatible Disc
Formats

DSD disc

DVD-R/-RW/+R/+RW'6)¿OHIRUPDW

Data disc

CD-R/-RW
DVD-R/-RW/+R/+RW

6XSSRUWHGIRUPDWVWAV, FLAC, DSF, DSDIFF

Data Read Principle
Laser Diode
Wavelength
Transport
Outputs

Digital Inputs

Non-contact optical pickup
SA-CD

655 nm

CD790 nm

HS-LINK

Proprietary standardDedicated HS-LINK cable

OPTICALJEITA CP-1212 compliant-(,7$VWDQGDUGRSWLFDO¿EHUFDEOH

COAXIAL

IEC 60958 compliant

75-ohm coaxial digital cable

HS-LINK

Proprietary standard

Dedicated HS-LINK cableUSB

USB 2.0 Hi-Speed(480 Mbps) compliant

USB 2.0 cablewith Type B connector

OPTICALJEITA CP-1212 compliant-(,7$VWDQGDUGRSWLFDO¿EHUFDEOH

COAXIAL

IEC 60958 compliant

75-ohm coaxial digital cable

Supplied accessories● AC power cord
● Audio cable with plugs AL-10● Remote Commander RC-140● USB Utility 3 CD1 bit
HS-LINK DSD 2.8 MHz(Ver. 1) PCM 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
16 to 24 bits
1 bit
HS-LINK DSD 2.8 / 5.6 MHz(Ver. 2) PCM 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz 16 to 32 bits
Sampling
Frequencies
DSD 0+] 0+]$6,2RQO\1 bit
USBPCM 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz 16 to 32 bits
16 to 24 bits
OPTICAL PCM 32 / 44.1 / 48 / 88.2 / 96 kHz
16 to 24 bits
COAXIAL PCM 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
D/A Converter
4MDS+ principle
Frequency Response
0.5 to 50,000 HzíG%
THD + Noise
0.0006%20 to 20,000 Hz
Signal-to-Noise Ratio
120 dB
Dynamic Range
117 dB
Channel Separation
117 dB
20 to 20,000 Hz
2.5 V 50 ohms
Balanced XLR typeOutput Voltage BALANCED
and ImpedanceLINE
2.5 V 50 ohms
RCA phono jackOutput Level Control
G%WRíG%In 1-dB steps
DigitalPower Requirements
120 V, 220 V, 230 V AC (voltage as indicated on rear panel), 50/60 Hz18 W
Power Consumption
Width 465 mm (18.3”) × Height 151 mm (6.0”) × Depth 393 mm (15.5”)
Maximum Dimensions
Net
19.0 kg (41.9 lbs)
MassIn shipping carton
25 kg (55 lbs)

● USB Utility 3 Setup GuideRemarks★ 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 plug of the supplied AC power cord depends on the voltage rating and destination country.

●The specifications and appearance of this product are subject to change without notice.
K2004Y PRINTED IN JAPAN 850-2222-00（B1）