PRECISION MDSD SA-CD PLAYER● High-rigidity, high-precision aluminum machined SA-CD/CD drive with low centerof gravity ● MDSD/MDS++ D/A converter driving 8 parallel channels using ANCC
● Programmable playlists so that you can enjoy your music in the order you want
● Data disc playback ● Direct Balanced Filter with completely separate lineand balanc ed signals ● Display with sampling frequency and number ofquantization bits ● Abundant transpor t outputs and digital inputs ● Digitalconnections to an Accuphase Voicing Equalizer ● Balanced output phase selector

Our highest performing combined SA-CD/CD player
The high-rigidity, high-precision drive traverse mechanism equipped with an outer rotor brushless DC
motor drive rotates discs smoothly and delivers accurate data reading, while the 8MDSD (DSD signal) /8MDS++ (PCM signal) type D/A converter driving the ES9028 PRO (ESS Technologies) processor in
8 parallel channels converts the inputs into highly precise analog signals. The DP-770 also incorporates
numerous noise suppression technologies like ANCC* to create an unparalleled musical experience.

The Technology of Precision
Transporter Features and Characteristics■ Accurate Reading
Vibration countermeasures in SA-CD/CD players that read audio datafrom rapidly rotating discs greatly impact sound quality. The DP-770
uses a highly rigid 6.9 kg (15.2 lbs) SA-CD/CD drive mounted on a
3.4 kg (7.5 lbs) bottom plate to create a low center of gravity. This
prevents the housing from wobbling, while significantly reducing
external vibrations from reaching the traverse mechanism. The
traverse and disc loading mechanisms are assembled using elastic
dampers of two different hardnesses to reduce resonance in theobjective lens and actuator, thus improving reading precision.

SA-CD/CD drive
Fixedaluminum frame

Large bridge

Traversemechanism
Disc tray

Mechanism base

■ Smooth Disc Loading
Carved from an aluminum block and then finished with a hard anodized
aluminum and satin treatment, the elegant and elaborate disc tray
uses high-quality dual stay bearing shafts to open and close smoothly
and quietly.

Dual stay
bearing shafts

8 mm thick aluminum bottom frame
Turntable Outer rotor
brushless DC motor■ Quiet Operation

Objective lens and actuator

The DP-770 uses an outer rotor brushless DC motor to rotate discs.
The minimal vibration and operating noise of this motor createa listening environment so quiet that it almost feels like there is
no rotating component at all.

Traverseholder

Elastic dampersof two different
hardnesses

Elastic dampers

Traverse mechanism supported by elastic dampers

Digital Processor Features and Characteristics■ MDSD (Multiple Double Speed DSD) Principle
Typical D/A converters process sound sources that use DSD signals
by first converting the source to a PCM signal and then using a
digital filter to remove high frequency noise. The MDSD principle
employed in the DP-770, however, inputs 8 phase-shifted DSD
signals into the 8 parallel channels in the MDS++ type D/A converter.
The entire circuit then operates as a moving-average filter withcompletely linear phase characteristics to eliminate high frequency
noise. MDSD represents a ground-breaking playback methodthat eliminates high frequency noise without converting DSD
signals into PCM signals.
DP-7700.0004% (108 dB)

Conventionalmodels0.0005% (106 dB)

1/2 clock delay

The D/A converter drastically improves performance with the MDS++
conversion principle by driving multiple delta-sigma type D/A converters
connected in parallel. By passing output from the high-performance
ES9028PRO (ESS Technologies) through 8 parallel converter channels,
the DP-770 provides a theoretical 2.8× (=√8) increase in overall
performance for distortion, noise, linearity, andmore. Because the improvements provided bythe MDS++ principle are independent of signal
frequency and level, noise at very low levels canalso be minimized, a feat that conventionaldelta-sigma converters find extremely difficult
ES9028PROto achieve.

Linearity (digital input vs. analog output)

MDS＋＋ D/A Converter
In-phase

DSD
input signal

Ⅰ-V

Reversephase

2.8 MHzLS

Delay circuits■ MDS++ (Multiple Delta Sigma) Converter Principle withLINEARITY

Analog output

Digital input

Total harmonic distortion (incl. noise)vs. frequency response

Approx. 20%
improvement

Total harmonic distortion + noise performance (guaranteed values)

8 Parallel Channels

THD+NOISE vs FREQUENCY

Traverse mechanism

Ⅰ-V

Analogoutput signal
Ⅰ-V

LS

Ⅰ-V

Current
summing

I-V
converter

Powersumming

LS: Level Shifter
I-V: I-V conversion amplifier using ANCCMDSD principle block diagram＊：ANCC is a technology that improves performance by using a sub-amplifier to cancel noise and distortion in the main amplifier.

Advanced Features■ High-rigidity, high-precision machined aluminum SA-CD/CD
drive with a low center of gravity■ Data disc playback (including DSD discs)■ Digital connections to an Accuphase Voicing Equalizer■ Abundant digital inputs (HS-LINK, COAXIAL, OPTICAL, USB)・・・①■ Plentiful transport outputs (HS-LINK, COAXIAL, OPTICAL)・・・②■ 2 (BALANCED, LINE) analog outputs・・・・・・・・・・・・・・・・・・・・・・・・・・・・・③■ Phase selector to invert the balanced output・・・・・・・・・・・・・・・・・・④■ Display with sampling frequency and number ofquantization bits ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・⑤■ MDSD / MDS++ D/A converter driving 8 parallel channels
using ANCC・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・⑥■ Direct Balanced Filter circuit with completely separate line
and balance signals on a glass cloth fluorocarbon resin
substrate with low dielectric constant and minimum loss・・・・⑦■ Low noise power circuits equipped with custom-madesmoothing capacitors for high sound quality・・・・・・・・・・・・・・・・・・⑧■ Large power supply transformer with independent analog
and digital channels・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・⑨■ Natural grain wood case with a mirror finish handcraftedby artisans using carefully selected virgin wood・・・・・・・・・・・・⑩■ 8 mm thick machined aluminum bottom plate・・・・・・・・・・・・・・・・・⑪■ Advanced high-carbon cast iron insulators ・・・・・・・・・・・・・・・・・・・⑫■ High quality audio cable ASL-10B ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・⑬■ Programmable playlists so that you can enjoy track
playback in any order・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・⑭■ Output level adjustment ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・⑮⑤ Sampling frequency andquantization bit display (2.8 MHz/1-bit)① Digital inputs③ Analog outputs④ Phaseselector switch② Transport outputs⑥ D/A converter driving 8 parallel channels⑧ Power circuit⑨ Power transformers

Current track display(track 4 of 8)⑦ Direct balanced filter⑩ Wood case

⑭ Programmable playlists⑮ Output level adjustment⑫ Insulators

・・・Min.

Preamplifier and integrated
amplifier operation■Remote Commander RC-140 (included)

Max.
(Normal)⑪ Bottom plate⑬ Audio cable ASL-10B

Connecting to a Voicing Equalizer

Connecting to TVs, etc.

Connecting to PCs, etc.

Connecting a voicing equalizer between the DP-770’s
transport outputs and digital inputs allows for acoustic
corrections to the digital signals of the CD playbackin the digital domain.

When connecting to a TV or other device that outputs
digital signals, the DP-770’s high-quality D/A converter
converts music and speech to analog signals so thatyou can enjoy them on your stereo system.

The DP-770 features a USB port (type B) for highresolution data playback when connecting toa PC using a USB cable.
PC, etc.

TV, etc.

High-quality equalizer
with automatic acousticcorrections to adjust fordifferences in left/rightfrequency responses

Voicing equalizer

Compatible sampling frequencies
PCM signals: max. 384 kHz / 32-bit
DSD signals: max. 11.2 MHz / 1-bit(11.2 MHz is for ASIO only)

Use PCM signals.
The connected device mayneed to be set to PCM signals.

Fiber-optic cable

HS-LINK cable

USB 2.0 cablewith Type B connector

or

Coaxial digital cable

DP-770DP-770Preamplifier

DP-770Preamplifier

Preamplifier

Front Panel

Rear Panel

Current track /Frequency
sampling frequency
indicator
Input
Total tracks /indicator
no. of quantization bits

Power switch

Play button
Pause button

Input button

SA-CD/CD button

Time
Repeatdisplay
indicator
Program
Outputindicator
level

Disc tray

Stop button

Back/Next

Open/Close button

Analog outputs(BALANCED / LINE)

Digital inputs(HS-LINK / COAXIAL / OPTICAL / USB)

Reversebuttons

Transport outputs(HS-LINK / COAXIAL / OPTICAL)

AC power
supply connector

Phase selector switch

Fast forward

Guaranteed Specifications
2-channel Super Audio CD
Compatible
Disc Formats

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

Data disc
Data Read Principle
Laser DiodeWavelengthTransport
Outputs

Digital Inputs

Supported formats:
WAV, FLAC, DSF, DSDIFF

Non-contact optical pickup
SA–CD

655 nmCD

790 nmHS-LINK

Proprietary standard

Dedicated HS-LINK cable

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

COAXIAL

IEC 60958 / AES-3 compliant

75-ohm coaxial digital cable

HS-LINK

Proprietary standard

Dedicated HS-LINK cableUSB

USB 2.0 High-Speed(480 Mbps) standard

USB 2.0 cable withType B connector

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

COAXIAL

IEC 60958 / AES-3 compliant

75-ohm coaxial digital cable

Supplied accessories● AC power cord (2 m)● Audio cable ASL-10B with plugs● Remote Commander RC-140● USB Utility 3 CD

● USB Utility 3 CD Setup Guide● Cleaning cloth

HS-Link DSD(Ver. 1) PCM
HS-Link DSD(Ver. 2) PCM
Sampling
Frequencies
DSD
USB
PCM
OPTICAL PCM
COAXIAL PCM
DSD
D/A Converter
PCM
Frequency Response
Total Harmonic Distortion + Noise
Signal-to-Noise Ratio
Dynamic Range
Channel Separation
Output Voltage BALANCEDand ImpedanceLINE
Output Level Control2.8 MHz
1-bit
32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
16 to 24-bit
2.8 / 5.6 MHz
1-bit
32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz 16 to 32-bit
2.8 / 5.6 / 11.2 MHz (11.2 MHz: ASIO only)
1-bit
44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz 16 to 32-bit
32 / 44.1 / 48 / 88.2 / 96 kHz
16 to 24-bit
32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
16 to 24-bit
8 MDSD principle
8 MDS++ principle
0.5 to 50,000 Hz+0, –3.0 dB
0.0004%20 to 20,000 Hz
121 dB
119 dB
118 dB
20 to 20,000 Hz
2.5 V 50 ohms
Balanced XLR type
2.5 V 50 ohms
RCA phono jackDigital
0 dB to –80 dB
1-dB steps

Power Requirements

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

30 W

Maximum Dimensions

Width 477 mm (18.8 in) × Height 156 mm (6.1 in)× Depth 395 mm (15.6 in)

MassNetIn shipping carton

28.5 kg (62.8 lbs)
36 kg (80 lbs)

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 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.

https://www.accuphase.com

J2305Y

850-2235-00（B1） PRINTED IN JAPAN