PRECISION COMPACT DISC PLAYER

DP-75Vm Separate CD transport and processor sections m MDS type D/Ac o nve r t e r a s s u r e s p h e n o m e n a l c o nve r s i o n p r e c i s i o nm Compatible with next-generation digital sources m Ultra jitter-free
PLL circuit topology m Two sets of digital inputs and outputs m Option
board slots allow adding digital input and output boards m Fully digital
control of CD mechanism m Balanced actuator dr ive circuitry

A new-generation CD player that reproduces even the most subtle musicaldetails  Revolutionary MDS (Multiple Delta Sigma) converter with 24-bit
ultra high precision. Separate CD transport and processor sections. Readyfor handling input from new-generation digital sources such as SACD andDVD-Audio. Fully digital control of CD mechanism.

The DP-75V incorporates the latest advancesin digital technology. Processing performance
was upgraded to handle the new generationof super high resolution audio sources suchas SACD and DVD-Audio. Enhanced soundquality is also available with existing CDs.
Although the DP-75V may look like a
conventional integrated Compact Disc player,
it really consists of a separate transport
section and a digital processor each of which
can be used on its own.
The processor features a revolutionary MDS(Multiple Delta Sigma) converter with superb
24-bit precision. This ensures ultra low
distortion and outstanding signal-to-noise
ratio. All other performance aspects have also
been significantly improved. Digital inputs
allow the routing of external digital sources
throughtheconverter of theDP-75V,
forplayback of anyfor mat sourcewith exceptional sound quality. To ensure
future upgradability, the unit has option board
slots that support the ADB 2 (AccuphaseDigital Bus 2) interface which accommodates
next-generation formats such as SACD andDVD-Audio. The EXT DSP option board slot
allows connection of the DG-28 Digital
Equalizer for sound field compensation in thedigital domain.
The simple, refined design of the DP-75V
complements its technological prowess. The
overall result is music reproduction of suchclarity and detail definition that you will
discover a whole new dimension of enjoyment
even in long-familiar CDs.

Innovative MDS (Multiple Delta Sigma)
converter reduces distortion to theoreticallimits and assures outstanding S/N ratio

The output signal is generated by a newly
developed D/A converter that provides
excellent performance and sound quality. TheMDS (Multiple Delta Sigma) principle employs
several delta sigma type converters in aparallel configuration, resulting in a dramaticenhancement of precision. The delta sigma
principle combines oversampling with noiseshaping (a kind of digital feedback) to project
the amplitude information of the digital signal
onto a time axis for precise conversion. Figure
2 shows several delta sigma converters thatare fed the same signal and whose outputs
are combined to arrive at the overall waveform.

DAC#1DigitalInputs
OptoRXDAI input signal

S1S2MDSoutput

e2

S0

#2

#nFrequency
dividerFig. 2 MDS type D/A converter principle

Fig. 3 Ultra jitter-free PLL circuit

In the DP-75V six delta sigma converters areoperated in parallel, resulting in aperformance improvement by a factor of 2.45(=√6). An important charac-teristic of the MDS

the Ultra Jitter-Free PLL Circuit of the DP-75V
consists of a preamble detector and a voltagecontrolled oscillator (VCO) using a quartz
crystal element. The master clock producedby this PLL circuit is free from theeffects of pulse distortion and jitter.

DP-75VCD Transport
SectionUnbalanced
Outputs
3 PoleLinearPhase
Low PassFilter

DigitalIsolator

12
Left
AnalogOutputs∆Σ

FormatConverter

Balanced
BufferBalanced
OutputOutputLevel

MDS 24bit
D/A Converter ×6
Unbalanced
Outputs

Ultra
Jitter Free
PLL

OptoRXCoax

VCO

SnMaster clock output(free from jitter andpulse distortion)

OptionSlot 2

OptoRX

Loopfilteren

DAI
Decoder

Coax

Preamble signal(pulse distortion removed)e0Sn-1

OptoRX

Option(DIO-OC1)

Phase
comparator

en-1

Digital Filter

OptionSlot 3

Preamble
detector#1Digital
Outputs

External
DSP

For synchronizing the operation of the D/Aconverter with the digital audio interface (DAI),a phase-locked loop (PLL) circuit is usedwhich generates a master clock to be used
as a system reference. As shown in Figure 3,e1

Digitalinput

Coax
RXOption
Slot 1

Ultra jitter-free PLL circuit

SignalConversion error

MDS 24bit
D/A Converter ×6Coax
RXprinciple is that theperformance benefits
areachieved
regardless of signalfrequency and signallevel. Thus noise atvery low signal levels, that was difficult tocontain with conventional delta sigma
converters, can now be drastically reduced.
The audible result is music reproduction
emerging from complete silence with animpressive sense of clarity and nuance.

[Digital Processor Section]∆ΣMasterClock

3 PoleLinearPhase
Low Pass
Filter12Right
AnalogOutputs

Digital Filter
DigitalIsolator

OutputLevel

Fig. 1 Block diagram of DP-75V processor

Balanced
BufferBalanced
OutputSeparate processor section withcoaxial and optical input fordigital signals
A digital input allows the user toenjoy the top-level performance ofthe processor section with othercomponents that can supply adigital signal. In addition, a digital
output lets the user connect a DAT
recorder, MiniDisc recorder, orother component capable ofrecording a digital signal, so theoutput of the CD transport or thesignal from connected externalsources can be recorded. A directconnection from the digital outputof the CD transport section to theDigital Preamplifier DC-330 is also
possible.

n Supplied remotecommander RC-25
Serves for input
selection, direct play,
repeat and program
play, leveladjustment andother functions.

Linear phase analog filters
provide superior characteristics
Aliasing noise in the extreme upper frequency
range is removed by a 3-pole linear phasetype filter with outstanding phasecharacteristics. The cutoff frequency isdesigned to minimize phase shift within thepassband. Strict selection of all filter
components assures sonic purity and musicalaccuracy.
Digital level control prevents sound quality
deterioration
The 24-bit MDS D/A converter in the DP-75V
is not subject to the deterioration of resolution
and allows precise level attenuation down to–60 dB.

[CD Transport Section]
Fully digital control of CD mechanism
The control circuitry of the mechanism section
is fully digital, allowing the use of adaptive
filters to optimize servo performance for eachindividual disc. This assures enhanced
operation stability and a drastic reduction inerror rate.

D/A converter with printed circuit boards
made from Teflon (glass fluorocarbon resin)with low dielectric constant and low loss
The D/A converter boards use a substrate ofglass fluorocarbon resin which has a stable,
low dielectric constant as well as superior heat
resistance and high-frequency characteristics.
Using this material for the audio circuitry
assures signal transmission with the highest
purity, resulting in a clear improvement inperceived signal-to-noise ratio. In the DP-75V,
gold-plated copper traces further contributeto sonic purity.
* Teflon is a registered trademark of DuPont USA.

Fully balanced analog output circuitry
The audio output section features balanced
circuitry which is isolated from the ground line.
To match any system configuration both a setof balanced XLR connectors and a set of RCA
type unbalanced connectors are provided.

n Assembly with DAI
encoder/decoder, ultra
jitter-free PLL circuit, andother digital processingcircuits. Two MDS D/Aconverter boards (one eachfor right and left) use Teflonwith a low dielectric constantand low loss. The analog output
connector assembly is also visible.

Balanced drive circuitry for CD actuators

Laser pickup with integrated RF amplifier
for error-free operation
The pickup used in the DP-75V employs anRF amplifier which is so compact that it canbe directly integrated in the photo detector
pickup assembly. This assures that the highlevel output signal remains free from noiseinterference, which in turn reduces the error
rate.

The motors and actuators that move the disctray, spindle, sled, and the focusing andtracking assembly are driven by two amplifiers
arranged in a balanced configuration.
Because there is no current flowing in theground line, the operation of other circuits inthe player remains entirely unaffected.
Tray lock prevents resonancePower-on play and frame display capability(1 frame = 1/75 second)Option Boardsl Any option board can be used in any slot.
l All option boards designed for the DC-330, DC-300,
DG-28, DP-65V, DP-75V, and DF-35 can be used.

Three option board slots provide flexibility
for input and recording output configurations

HPC Coaxial Input Board

In addition to the standard digital inputs andoutputs, the option board slots provide
additional ways to utilize the high performanceof the digital processor section of the DP-75V.
To assure compatibility with the next
generation of source formats, such as SACD
and DVD-Audio, the option board slots support
the ADB2 interface standard.

DI-BNC1

uses 75-ohm coaxial cable with BNC plug.

Digital Input/Output Board

DIO-OC1

provides two sets of coaxial and optical connectors, for
input and output of digital signals.

HPC Optical Input/Output Board DIO-ST1
serves for connection of an HPC optical fiber linkcorresponding to the ST standard.
✽ ST is a registered trademark of AT&T.
✽ HPC optical fiber cables (HLG-10, etc.) are available
from Accuphase.

l A digital input/output board with optical andcoaxial connectors (DIO-OC1) can be used.
BNC, HC optical (ST), and HPC balanced
input is also possible.

AES/EBU Input/Output Boardl An HS (High Speed) Link option board canbe installed for connection of the SACD
transport DP-100.

The ADB 2: Accuphase Digital Bus 2
Interface standard for Accuphase option
boards supporting sampling rates above
48 kHz, such as those used by SACD andDVD-Audio.

l The EXT DSP option board slot allows
connection of the DG-28 Digital Equalizer .
n FRONT PANEL

DIO-PRO1

provides a set of XLR input and output connectors
conforming to AES/EBU professional digital standards.
✽ HPC balanced cables (HLC-10, etc.) are available
from Accuphase.

✽ A digital input board can act as an additional input
for the processor section.
✽ A digital output board can act as an additional output
for the CD transport section or external components
connected to the unit.

DP-75V Guaranteed Specifications

ABCDEFG[Guaranteed specifications are measured according to the EIAJ standard CP-2402.
Measurement disc: CP-2403][CD Transport]

HI

J K L

l FormatStandard CD format

Quantization:
16 bits
Sampling frequency:
44.1 kHz
Error correction principle: CIRC
Number of channels:
2Revolution speed:
500 - 200 rpm(constant linear velocity)
Scan velocity:
1.2 - 1.4 m/s, constantl Data read principle

Non-contact optical pickup (semiconductor laser)l Laser type

GaAlAs (double heterodyne diode)[Digital Processor]l Input format
EIAJ CP-1201 compatible

n REAR PANEL
Option board slots
EXT DSP slot (for connection to DG-28)

M

l Digital input
ormat and level(EIAJ CP-1201)

Quantization:
16 - 24 bits, linear
Sampling frequency (automatic detection):
32 kHz, 44.1 kHz, 48 kHz 88.2 kHz, 96 kHz
176.4 kHz, 192 kHz, 2.8224 MHz(implemented through option board)
Format:Digital audio interface
OPTICAL:
Input –27 to –15 dBm
COAXIAL:
0.5 Vp-p, 75 ohms

l Digital output
format and level(EIAJ CP-1201)

Format:OPTICAL:l Frequency response

0.5 to 50,000 Hz +0, –3 dB

l D/A converter

MDS type, 24 bitsl Total harmonic distortion

0.0008% (20 - 20,000 Hz)

COAXIAL:NO

A Play track indicator
B TRACK/INDEX indicator
C TIME indicator
D Output level/frame indicator
E Disc tray OPEN/CLOSE button
F CD transport/processor selector button
G External digital component ON/OFF button
H POWER switch
I Disc tray
J PLAY/PAUSE button

PK Track search buttons(Processor operation: exter nal input
selector buttons)
L STOP button
M Analog outputs
2 sets of unbalanced connectors, 1 set ofbalanced connectors
N Digital inputs (coaxial, optical)
O Digital outputs (coaxial, optical)
P AC inlet (for supplied power cord)H

Digital audio interface
Output –21 to –15 dBm
Wavelength 660 nm
0.5 Vp-p, 75 ohmsl Signal-to-noise ratio

116 dBl Dynamic range

112 dB (24-bit input; LPF OFF)l Channel separation

108 dBl Output voltage andimpedance

BALANCED: 2.5 V into 50 ohms, balanced XLR type
UNBALANCED: 2.5 V into 50 ohms, RCA-type phono jackl Output level control

0 to –60 dB in 1-dB steps (digital)l Power requirements

120V/230V (Voltage as indicated on rear panel) AC, 50/60 Hzl Power consumption

26 W

l Dimensions

Width 475 mm (18-11/16” )Height 150 mm (5-7/8” )Depth 397 mm (15-5/8”)

l Weight

19.8 kg (43.7 lbs) net
25.0 kg (55.1 lbs) in shipping cartonl Supplied RemoteCommander RC-25

Remote control principle: infrared pulse
Power requirements: 3 V DC, IEC R4 (size AAA) batteries × 2Dimensions: 66 (W) × 175 (H) × 20 (D) mm
Weight: 225 g (including batteries)

Remarks
H This product is available in versions for 120/230 V AC. Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.
H The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country.

n Supplied accessoriesl AC power cordl Audio cable with RCA plugsl Remote Commander RC-25

m Specifications and design subject to change without notice for improvements.

PRINTED IN JAPANL9910 851-0165-00 (AD1)