● Revolutionary AAVA volume control ● Output stage with triple parallel push-pull power
MOS-FETs ● Instrumentation amplifier principle for power amplifier input stage allows fullybalanced signal transmission, complemented by MCS+ topology and current feedback
amplification circuitry ● Logic-control relays for shortest signal paths ● Strong power supply withmassive high-efficiency transformer and large filtering capacitors ● POWER IN button allows
separate use of preamplifier and power amplifier sections ● Numeric indication of volume level

The Supreme Pure Class A Integrated Amplifier
Riding the same crest as the40th anniversary commemorative models, the E-600 features AAVA volume
control and a triple parallel push-pull power MOS-FET arrangement. Poweramplifier stage with latest instrumentation amplifier configuration realizes
balanced signal transmission. MCS+ topology and current feedback principle
assure excellent phase characteristics in high range. Massive power supply and low
impedance design of output circuitry result in 150 watts per channel (into 1 ohm,with music signal) and a damping factor of 500.

■ Loudness compensator for enhanced bass at low listening levels.
■ Dedicated headphone amplifier optimized for sound quality.
■ Versatile array of inputs with two balanced inputs to shut out
external noise interference.

Toroidal power transformer

Filtering capacitors■ Power amplifier stage features instrumentation amplifier configuration forbalanced signal transmission. MCS+ topology and current feedback principle
assure excellent phase characteristics in high range.
■ Tone controls using summing active filters for optimum sound quality.
■ Logic-controlled relays for signal switching assure high sound quality andlong-term reliability.
■ Two option board installation slots on rear panel provide further versatility.
With AD-30 or AD-20 board, MC/MM switching on front panel is possible.

Line and balanced input/output connectors■ DAC input selector button allows input selection when using the Digital Input
Board DAC-40 With USB Port. Display of the sampling frequency of thelocked digital signal is also possible. (Not supported when using DAC-30 /DAC-20 / DAC-10.)

DAC input selector button and LED indicators■ Individual phase setting supported for each input position.
■ POWER IN button and preamplifier output and power amplifier input
connectors allow independent use of both sections. Both line level and MC/MM selector button
balanced connectors are provided.

Sampling frequency
display example

PHASE selector button■ Newly developed bar graph meters
allow monitoring of output power
levels.
■ Semiconductor (MOS-FET) switches
used for protection circuitry prevent
contact problems and ensure
long-term reliability. Eliminating
mechanical contacts from signal
path also further enhances soundquality.
■ Two sets of large-size speakerterminals accept also Y lugs.

Ultra-heavy-gauge edgewise coil

16
12

16
14
12

8
6
4

High frequency
range

Low frequency
range

8

LOUDNESS COMPENSATOR：ON

10

Protection circuit

MOS-FET switches

18

Boost

POWER IN selector button

Response in dB

The power amplifier block is configured with the latest
instrumentation amplifier topology, which enables fullybalanced signal transmission throughout. Together with
MCS+ and the current feedback amplification principle, thismakes for even better electrical characteristics. In the
output stage, MOS-FET devices are arranged in a triple
parallel push-pull configuration per channel. By keeping
the impedance of the output circuitry extremely low,
constant-voltage speaker drive can be realized, so that thesignal remains completely unaffected even by wildly
fluctuating speaker impedance. Accuphase's rich expertiseand dedication to impeccable sound are manifested in thepure class A operation, resulting in an amplifier capable ofbringing out even the most delicate and hidden nuances ofthe music. With its rich array of highly sophisticatedtechnology geared for the ultimate sound, the E-600 is
destined to become the new reference for integrated
amplifiers.

■ Strong power supply with massive high-efficiency toroidaltransformer and large filtering capacitors.

4
0
−4

2

Cut

AAVA (Accuphase Analog Vari-gain Amplifier) is a radicallydifferent approach that solves a slew of problems that beset
conventional volume controls. The AAVA volume control in
the E-600 employs the same high-rigidity volume sensor,
extruded from a solid aluminum block and featuring an
ultra-massive brass shaft, originally developed for themodels C-2820/C-2420. Operating the knob provides anutterly smooth operation feel. Paired with a drastic
improvement in S/N ratio through low impedance circuitdesign, the E-600 takes both performance and build quality
to a new level.

■ Power MOS-FETs in triple parallel configuration operating in pureclass A deliver guaranteed linear power: 120 watts/channel into 2
ohms, 60 watts/channel into 4 ohms or 30 watts/channel into 8
ohms.

Response in dB

Integrated amplifiers from Accuphase enjoy an excellent
reputation for technical excellence and outstanding musicalqualities, as demonstrated in an impressive range ofmodels. In particular, the E-530, E-550, and E-560
integrated amplifiers operating in full class A have beenpraised widely both in Japan and overseas. Aiming for theeven higher performance level set by separate typeamplifiers, the E-600 makes full use of the sophisticateddesign technology accumulated by Accuphase over theyears. Featuring a further refined AAVA type volume
control, latest circuit topology, and parts and materials of
the highest grade, the E-600 is the non-plus-ultra integrated
amplifier imbued with the spirit of the 40th anniversarycommemorative models.

0
−2

−8
−12

−4
−6
10

100

1k
Frequency in Hz

10k

100k

Loudness Compensator Characteristics

−16
10

BASS
adjustment range

TREBLE
adjustment range

100

10k

1k
Frequency in Hz

100k

Tone Control Characteristics

AAVA (Accuphase Analog Vari-gain Amplifier) Volume Control
Extruded from solid aluminum block★ 2 parallel circuits

16 current switches(65,536 possible combinations)

High-rigidity volume sensor construction

AAVA configuration in E-600

Turning the volume knob on the front panelcauses the actual volume level position to
be detected. The corresponding signal issent to a CPU which in turn controls theaction of the AAVA circuitry.
The massive knob provides a smooth
operation feel and further enhances
position detection accuracy.

1★
2

I -V Converter
Reconversion ofcurrent into voltage

1★
22

Input music signal
1
23＋Current

BUFFER

INPUT

values are
added

5-MCS

＊ Interior parts in the image are simulated.

I-V

OUTPUTLEVEL DISPLAY

1
215

1
216

V- I Converter
CPU
Conversion into current with
16 weighting stages(1/2 - 1/216)

VolumeBalance
Attenuator

CPU detects position of volume knob
and operates current on/off switches
according to knob position

Volume knob is turnedand position is detected■ Configuration with a total of 18 V-I converter amplifiers, paralleled for upper twounits, reduces overall AAVA impedance to one half and results in lower noise.
Input stage with five buffer amplifiers ensures powerful drive capability.
■ No more left/right tracking differences or crosstalk.
■ Amplifier display shows accurate gain as numeric indication.
■ AAVA maintains high S/N ratio, low distortion, uniform frequency
response and optimal sound quality at any volume setting.
■ Attenuator and balance control also implemented by AAVA, eliminating
additional circuitry.
■ Volume control resolution: Combination of V-I converter
amplifiers gives 65,536 possible volume
steps.

Logic-controlled
ロジック・リレーコントロールとライン入・出力端子
relays and line input and output connectors

Option board slots
Protection circuit assembly
Large heat sink and大型ヒートシンクと
power
amplifierassembly
パワーアンプアッセンブリー

Massive power transformer

High-rigidity volume
sensor mechanism

Large heat sink and大型ヒートシンクと
power
amplifierassembly
パワーアンプアッセンブリー

Large filtering capacitors

AAVA volume control assembly■ Supplied RemoteCommande RC-220
Allows volume adjustment
and input source switching.

225

210W
200
175

160W
150
125
100

120W

75

65W

Output power (W)

150W
110W

50

60W

Power MOS-FETs

25

Power amplifier assembly

30W

Power amplifier assembly and output stage
with triple parallel push-pull power MOS-FETs
directly mounted to large heat sink.

Max. output power
Rated output power

8Ω

4Ω

2Ω

1Ω

Impedance (Ohms)

Output power characteristics
Signal input stage

Power amplifier stage
MCS+ (Multiple Circuit Summing)Biasstabilizer+ B1

REGULATOR

Q1+ INPUT

Q5

Q9

Q 13

Q7

Q 11

Q 15

＋
−

Q3

NFB
NETWORK

Q 17

Q 19

Q 21

Q 23

Q 25

Bias
stabilizer

NFB
NETWORKOUTPUTBiasstabilizer

NFB
NETWORK−– INPUT

+ B2

Q2

Bias
stabilizer

Q6

Q 10

Q 14

Q8

Q 12

Q 16

＋

Q4

Q 18

REGULATOR

Q 20

Q 22

Q 24

Q 26

– B2

– B1

Bias
stabilizer■ AAVA volume control assembly with increased
circuit and parts mounting density

Circuit diagram of E-600 amplifier section (one channel)

Connection Example For Bi-amping Setup＊ The example shows asetup with an additional
amplifier for the highfrequency range.

Left loudspeaker

Two slots allowing easy
insertion of option boards
are provided on the rear
panel.
● Option boards can be used
to implement high-quality
reproduction of a digitalmusic signal supplied
directly to the amplifier, or
high-quality reproductionof analog records.
● It is also possible to install
two identical boards.

Right loudspeaker

⊖⊕⊖⊕

LOW

RIGHT

E-600

⊖ ⊕⊖ ⊕

HIGH

LOW

HIGH

● COAXIAL: For 75-ohm coaxial cable

DAC-40AD-30
Photo shows option board
installation example.

LEFT− ＋ − ＋

Coaxial digital cable(Up to 192 kHz/24 bit)

Supported sampling frequency range:
32 kHz to 192 kHz, 24 bit● OPTICAL: For optical fiber cable
Supported sampling frequency range:
32 kHz to 96 kHz, 24 bit● USB:For USB cable (Type B connector)
Supported sampling frequency range:
32 kHz to 192 kHz, 24 bit

Analog Disc Input Board● MC/MM switching is possible on the front panel

Digital componentof the E-600.
● Internal DIP switches control MC input impedance

Digital (S/PDIF) output

and subsonic filter on/off.

Optical fiber cable
RIGHT− ＋ − ＋(To INPUT

DAC-40CD player■ Front panel

Power amplifier (P-4200, A-35 or similar)

q

w

e

r

Type B connector
Up to 192 kHz/24 bit

(

Gain:

40 dB

Computer＊For playback of material on a computer via the USB port, itis necessary to install software from the supplied USB Utility
CD-ROM. (Not required with an Apple Macintosh computer.)

t

66 dB

MM Input impedance: 47 kilohms

USB cable

Analog output

Gain:

MC Input impedance: 30/100/300 ohms (selectable)(Up to 96 kHz/24 bit)

LEFT

AD-30

Features a high-performance, high-gain phonoequalizer for playback of analog records withoutstanding sound quality.

DAC-40 connection example

From PRE OUT

DAC-40Features a high sound quality, high-performance
MDS++ D/A converter. The USB port allows
connection to a computer via USB cable, forreproduction of high-resolution music librarydata with superior sound quality.

●

In a bi-amped setup, the speaker units for the LOW frequency
range and HIGH frequency range are driven by separate
amplifiers of equal gain, for even better sound quality.
＊ The speakers must have abuilt-in crossover networkand separate inputs for
LOW and HIGH range.

Digital Input Board

Option Boards

Line Input Board

LINE-10

Provides a set of general line level inputs.

E-600 Guaranteed Specifications[Based on the EIA RS-490 test standard]

y

u

i

o

!0

■ Rear panel

⓫

⓬⓭ ⓮

Sub panel⓯

Option Board
installation slots

⓰

⓱⓲

⓳

Pressing this button
opens the sub panel.

● Rated Continuous Average Output Power (both channels operating simultaneously, 20 - 20,000 Hz)
150 W/ch1-ohm load (＊)
120 W/ch2-ohm load
60 W/ch4-ohm load
30 W/ch8-ohm loadNote: ＊ 1-ohm operation possible with music signals only.
● Total Harmonic Distortion (both channels operating simultaneously, 20 - 20,000 Hz)
0.05%
2-ohm load
0.03%
4 to 16 ohm load
● Intermodulation Distortion 0.01%● Frequency Characteristics HIGH LEVEL INPUTAt rated continuous average output:
20 - 20,000 Hz 0, -0.5 dB
POWER INAt rated continuous average output:
20 - 20,000 Hz +0, -0.2 dB
At 1 watt output: 3 - 150,000 Hz +0, -3.0 dB● Damping Factor
500 (with 8-ohm load, 50 Hz)● Input Sensitivity, Input Impedance

Input
HIGH LEVEL INPUTBALANCED INPUTPOWER IN

@0

@1

@2

q Input selector
w Bar graph meterse Level/frequency display
r Function LED indicatorst Volume controly Power switch
u Function selector buttons (A)Speakers A/B switching, MONO/STEREO
Preamplifier/power amplifier separation,
Phase switching
Tone controls ON/OFFi Bass control
o Treble control❿ Left/right balance control⓫ Function selector buttons (B)Recorder ON/PLAY selection
DAC input switching, Meter ON/OFF
Display mode switching, MC/MM switching⓬ Loudness compensator

@3

@4 ★

!3 Attenuator!4 Headphone jack
!5 Line inputs
TUNER / CD / LINE 1, 2, 3
!6 Recorder input/output connectors!7 Preamplifier output connectors (Line)!8 Power amplifier input connectors (Line)!9 Left/right speaker output terminals (A/B, 2 sets)@0 CD/LINE balanced input connectors
When using line input: Pin ② -, Pin ③ +When using balanced inputs: Same as input
source component( Can be changed with phase selector button u)@1 Preamplifier output connectors (Balanced)@2 Phase selector switch for balanced power
amplifier inputs@3 Power amplifier input connectors (Balanced)@4 AC power connector ★

Sensitivity

Input

For rated output For 1 W output (EIA) impedance

77.7 mV
77.7 mV
0.617 V14.2 mV
14.2 mV
113 mV

20 kΩ
40 kΩ
20 kΩ

● Output Voltage, Output Impedance
PRE OUTPUT 0.617 V 50-ohm (at rated continuous average output)● GainHIGH LEVEL INPUT → PRE OUTPUT: 18 dB
POWER IN
→ OUTPUT：
28 dB● Tone Controls
Turnover frequency and adjustment range
BASS:
300 Hz ±10 dB（50 Hz）
TREBLE: 3 kHz ±10 dB（20 kHz）● Loudness Compensation ＋6 dB（100 Hz）● Attenuator−20 dB● S/N Ratio, Input-converted Noise

Input shorted (A weighting) S/N ratio(EIA)
S/N ratio at rated output
HIGH LEVEL INPUT
101 dB97 dB
BALANCED INPUT
94 dB
97 dB
POWER IN117 dB
101 dBInput● Power Level Meters

Output voltage (dB) shown on 24-point scaleWith meter ON/OFF switching function
2 - 16 ohms
● Load Impedance
Suitable impedance: 8 ohms or higher● Stereo Headphones● Power Requirements 120 V/220 V/230 V AC, 50/60 Hz(Voltage as indicated on rear panel)
160 watts idle
● Power Consumption
260 watts in accordance with IEC 60065
200 watts for rated output into 8 ohms
465 mm (18.31”)● Maximum Dimensions Width
Height
191 mm (7.52”)
Depth
428 mm (16.85”)
24.7 kg (54.5 lbs) net● Mass32.0 kg (70.6 lbs) in shipping carton

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.
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.
■ Supplied accessories:●●●

AC power cord
Remote Commander RC-220

The specifications and appearance of this product are subject to change without notice.
K1305Y PRINTED IN JAPAN 850-2183-00（B1）