● AC voltage stabilizer based on waveform shaping technology ● Acts as asource of extremely clean energy ● Low-distortion reference waveform generator● Highly effective waveform compensation ● Outstanding current capability● Superb interference rejection ● Built-in meter for monitoring vital parameters
including output power, input/output voltage, and input/output distortion● Advanced protection features ● Large high-efficiency toroidal transformer

The photograph shows the 230 V version.

Amazingly pure energy source with momentary 40 A (80 A) current capability
Clean AC power supply with revolutionary waveform shaping technology
delivers up to 510 VA

Innovative Technology

Every audio component draws all of its energy from the power supply which in turn is connected to theAC power grid. The Clean Power Supply components from Accuphase are products that remove noise
and impurities from the AC power line through a groundbreaking new approach, resulting in a drastic
improvement of the sound and picture quality of connected audio and video equipment. Without relying
on an oscillator, the reference waveform is created with further improved accuracy and is linked to thepower section by a balanced connection to ensure incredibly low distortion in the output waveform. ThePS-530 can deliver as much as 510 VA, covering the requirements of most standard audio components.

Low-distortion reference waveform generator
To generate the 230 V (120 V) sine wave reference signal, the zero-cross point at thesecondary winding of a measurement circuit transformer is detected by a comparator and usedby the high-precision power supply to generate a square waveform. The square wave then isrouted through a newly developed 50/60 Hz band pass filter and a six-stage band elimination
filter (BEF). The filter frequency is switched in sync with the input frequency, for automatic 50 Hz
and 60 Hz support. By routing the signal through another band pass filter, a low-distortion sine
wave (reference signal) is created that is not dependent on the input voltage.
Operation Block Diagram of PS-530

Outstanding waveform compensation power
Figure (a) shows a severely distorted waveform such as commonly
encountered in ordinary AC outlets at home. Simple filtering will never beable to bring this waveform back to the intended shape. Figure (b) shows
the condition where noise is affecting the AC power. Filtering will be able
to remove some of the higher frequency noise components but low
frequency components are very difficult to remove.
The PS-530 incorporates power waveform shaping technology that uses aclean reference waveform and works in real time to provide exactly therequired compensation and remove any unwanted components. Distortionis reliably eliminated and the result is a perfectly clean source of energy.
Waveform shaping principle of PS-530

Distortedwaveform
0Waveform
affected by noiset0t0

Compensation waveform0Compensation waveform

PS-530 output
waveform(a) Compensation is provided
for distorted parts of waveformt

PS-530 output
waveformt0tt0(b) Influence of noise is calculated andwaveform compensation is applied
accordingly

Reference waveform assembly＊ The figures in brackets apply to the120 V version.

The photograph shows the230 V version.

Clean and Powerful Energy Supply
Power supply waveform and clean PS-530
output waveform
Almost all electrical devices used in a household
convert the AC supplied by
the outlet into a DC current
forpoweringinternalcircuits. This task isperformed by a rectifier. As
shown in photograph ⓐ,
the rectifier load current
has a pulse waveform witha large current flowing
momentarily in the vicinityof the voltage peak.
This causes a voltage
drop, resulting in clipping of
the voltage waveform, as
shown in photograph ⓑ. A
clipped waveform with ahigh amount of distortion
contains many unwanted
frequency components, orharmonics, as shown in theleft-side graph below.
When entering the audio
circuitry of an amplifier
through the power supply,
such harmonic components can interfere with theaudio signal and causeintermodulation distortion
which greatly affects soundquality.

Photo ⓐ Current waveformof rectified load

Photo ⓑ Voltage waveform ofAC line (distortion approx. 3%)

Photo ⓒ PS-530 output waveform(distortion approx. 0.06%)

When passing through the PS-530, harmonics within the
audible range are largely removed (frequency spectrum inthe right-side graph below), and the result is a clean sine
waveform as shown in photograph ⓒ.
〔dB〕
0.0

〔dB〕
0.0

－20.0

－20.0

50Hz

－40.0

－40.0

－60.0

－60.0

－80.0

－80.0

－100.0－100.0－120.0010k

20k〔Hz〕－120.0Frequency spectrum of power line (photo ⓑ)

Exceptional current capability

The power amplifier which performs
the waveform adding/subtraction
action is designed for ample waveform compensation performanceand complete operation stability.
The final stage employs bipolar
power transistors rated for a maximum current of 15 amperes. These
devices are connected in a 10-parallel complementary push-pull arrangement which boasts a rated
output current of 2.22 A (4.25 A)
and an instantaneous peak current(inrush current) rating of 40 A (80 A).
This demonstrates the excellent
current capability of the PS-530.

50Hz

010k20k〔Hz〕

Frequency spectrum of PS-530 output (photo ⓒ)Frequency spectrum of power line

Optimized heat sink construction for ideal
thermal dissipation

The power amplifier section (with heat sink) is designed toensure maximum thermal dissipation efficiency while
maintaining a suitable weight balance.

Advanced Features
Three-step interference rejection

The input side of the PS-530 is equipped with a line filter
for removing any high-frequency noise components
present in the power line, such as generated for example
by digital equipment. The primary and secondary windingsof the power transformer are kept totally separate, and thefully shielded design shuts out any externally induced noise.
Since the amplifier uses the feedback principle, output
impedance is extremely low. This prevents any possibilityof mutual interference between components connected tothe outputs of the PS-530. The graph above shows thefrequency spectrum of the power line and of the PS-530
output. It can be clearly seen that harmonic components inthe audible frequency range are almost completely
removed when power passes through the PS-530.
Line filter

Shielded isolationtransformer

Depending on the setting selectedwith the function buttons, thefollowing information is shown.

DISTORTION scale (%)■ or ■
5
Used for 4

VOLT-AMPERE scale (VA)
Used for ■1
VOLTAGE scale (V)Used for ■2 or ■
3
Assembly with input voltage/distortion
monitoring circuitry

Meter of 230 V AC version

High-speed
adding/subtracting
circuit

Built-in meter allows easy monitoring ofoutput power (VA), input/output voltage (V),and input/output distortion (%)
Overload indicated by flashing LEDs

The power consumption of audio components such as
integrated amplifiers or power amplifiers differs
considerably depending on the volume. Being able tocheck while actually playing music is therefore highly useful.
The meter of the PS-530 lets the user see at a glance howmuch power the connected equipment is consuming at any
given time. If the maximum rated output power of 510 VA isexceeded, the meter function selector LEDs flash as awarning indication.

Reliable protection functions■ Meter

If any kind of problem should occur during operation, thecircuit protector immediately is triggered to protect the unit
and any connected components from possible damage.

■
1■
23■

4■

5■

■ Meter operation OFF button

Turns meter operation and meter
illumination on or off.

■ Meter function selection
pushbuttons■
1 Combined power consumption (VA)■
2 AC input voltage (V)■3 AC output voltage (V)■4 AC input distortion (%)■
5 AC output distortion (%)■
6 Auto-monitor

Assembly with protection circuitry

6■Advanced Features
Strong power supply withhigh-efficiency toroidal transformer and large filtering capacitors
The PS-530 uses a massive toroidal type power transformer withhigh output capability. Rectificationand smoothing is performed by twolarge aluminum electrolytic capacitors rated for 22,000 µF and built
for high sound quality applications.
This provides ample leeway.
AC voltage stabilizer based on
waveform shaping technology
The control circuitry of the PS-530
is performs addition/subtraction on
the alternating current from theinput and then passes it on. Mostof the AC energy from the input istherefore carried over to the output.
The introduced loss consists onlyof the power required for waveformcompensation, resulting in muchhigher efficiency and lower heatgeneration than with conventional
AC voltage stabilizers. The frequency follows the AC input, whichmeans that no oscillator is needed
as internal signal source, and therefore no high frequency noise isemitted by the unit.

PS-530 Meter (Power)
Indication and Load

Input
Efficiency power
[%]
[VA]

80

800

60600

40400

20200

Load: purely resistive
Efficiency

THD
[%]
0.8

Load: purely resistive

0.60.4

Input power

0.20100200300400500

Output power [VA]

Output power/efficiency (input power)
出力電力／効率・入力電力特性図
characteristics

0100200

400

500

Output power [VA]

● The rated power limit of the PS-530 is 510 VA.
When deciding on equipment to be connected,
select components so that the total remains
within these limits, and check actual power consumption using the meter.
● In case of overload, the meter function selector
LEDs flash. Reduce the load by reducing thenumber of connected components until the LEDs
stop flashing and stay constantly lit.

230 V

● The power consumption of integrated amplifiers
and power amplifiers varies considerably depending on the actual audio output. After connecting
such equipment, perform playback and verify thatpower consumption does not exceed the maximum rating when peaks in the music are reproduced at high volume levels.

120 V

Front Panel (The photograph shows the 230 V version.)

Rear Panel (The photograph shows the 230 V version.)

Meter of 120 V version
Meter
Output power, input/output voltage,
input/output distortion

Power switch/circuit protector

300

出力電力／全高調波ひずみ率特性図
Output power/THD characteristics

The power consumption of electrical equipment, as indicated on the equipment itself
and in catalogs and other documentation according to legal requirements, is usually
given in watts (W). This figure represents
the so-called effective power. However, theactual power drawn by the equipment islarger than the effective power. This iscalled the apparent power which is calculated by multiplying the applied voltage (230 V
or 120 V) with the actual current. The unit
for apparent power is VA (Volt-Ampere).
Since the value shown by the meter of thePS-530 is the apparent power, the reading
will be higher than the power consumption(W) given in catalogs and specificationsheets.

AC outlets
6 outlets on rear panel

Meter operation Meter function selector buttons
OFF button
VOLT-AMPERE (VA)
VOLTAGE INPUT/OUTPUT (V)DISTORTION INPUT/OUTPUT (%)
AUTO-MONITOR

AC outlets of 120 V version

The usable power supply
voltage is indicated here.

AC power connector ★

GUARANTEED SPECIFICATIONS
120 V version
Rated output capacity

230 V version

Rated output voltage

120 V AC ±1.5 V230 V AC ±3.0 V

Rated output current

4.25 A

2.22 A

Output frequency
Instantaneous peak current capacity

50 Hz or 60 Hz (identical to input frequency)
80 A

Output waveform THD

40 A
0.08% or less

AC power outlets

8 outlets, on rear panel

6 outlets, on rear panel

Rated input voltage

120 V AC ±10%230 V AC ±10%

Input frequency
No-load power consumption
Cooling principle

VOLT-AMPERE
VOLTAGE INPUT/OUTPUT(green zone of scale)
DISTORTION INPUT/OUTPUT
AUTO-MONITOR
Maximum Dimensions

50 Hz or 60 Hz
28 W120 V version

230 V version

Meter510 VA (continuous)

37 W
Natural air cooling

Mass0-510 VA
when overload occurs
120 V AC ±5%230 V AC ±5%
0-6%

Display cycles automatically from VOLT-AMPERE to
DISTORTION OUTPUT, showing each mode for 5 seconds

Width
465 mm (18.31")
Height181 mm (7.13")
Depth
386 mm (15.2")
24.0 kg (52.9 lbs.) net
30.0 kg (66.1 lbs.) in shipping carton

Note★ The 230 V AC and 120 V AC versions of the PS-530 differ regarding meter voltage indication, AC output connector shape, supplied power cord, etc. Make sure that you have the correct version.

Caution＊The PS-530 is available in 230 V AC and 120 V AC versions. The actual allowable voltage is indicated next to the AC power connectors on the rear panel. Be sure to check thisindication before using the PS-530.
＊This product can be used only on a regular household AC circuit rated for 230 V or 120 V AC, 50/60 Hz. Using the product with portable AC generators, airplane or ship power
generators or other types of power sources is not possible.
＊This product is designed to improve the quality of AC power supplied to audio or video components. Do not use it to power industrial type equipment or common household electricalappliances.
＊Do not use this unit for powering equipment where failure incurs a risk of injury or fatal accidents (medical equipment, aviation equipment, traffic control equipment, furnace and heating
control equipment, safety devices, etc.). Accuphase will not be liable for any problem occurring due to use of the PS-530 with the above type of equipment.

Supplied accessory● AC power cord

●The specifications and appearance of this product are subject to change without notice.
J1605Y PRINTED IN JAPAN 850-2199-00（B1）