Audio Database


Accuphase E-530
500,000 yen(February, 2002 release)


Integrated amplifier which concentrated the design technique cultivated until now and was developed as the highest peak with the newest circuit and the high-grade material.

Operation to heat has adopted the power MOS FET of the negative characteristic as an output magnification stage, and has guaranteed per channel the linear power which was stabilized even as for super-low impedance load to it by pure Class A operation of a parallel push pull drive of three pears. The heat which the parallel connection can make an Output load impedance and internal noise low, and is generated from an element can be distributed. Furthermore, the small electric power domain which was excellent in the linearity of MOS FET can be used efficiently, and the engine performance and improvement in sound quality are aimed at.

The preamplifier part and the power amplifier part returned in the form of current, and have adopted the current feedback magnification circuit excellent in the phase characteristic and sound quality of a high region.
Since this circuit has the very low impedance of a return input portion, it is hard to generate phase rotation, and as a result, there is almost no necessity for a phase guarantee. For this reason, since many characteristics are sharply improvable by a little NFB(s), the natural energy response has been obtained also in respect of the sound quality excellent in dynamic characteristics, such as a standup.

The line amplifier part consists of discrete parts by a current feedback magnification circuit.
Circuit composition is a pure complimentary push pull, made the input element parallel and has measured low noise-ization.

Since a straight signal course is constituted at the shortest, the logic relay control system has been adopted.
The sealed type relay for communication industry is adopted as the relay used by this system, and low contact resistance and after durability are realized by making a contact into a plated with gold and a crossbar twin system.

The added type active filter system is adopted as tone control.
From this system, it passes straight, and if needed, an original flat signal is another, and makes the characteristic, and sound quality is adjusted with making it adjust from a flat signal by it.

The Troy Dahl type power transformer of about 450 VA and two 40,000-micro F aluminum electrolytic capacitors for filters which adhered to the unresonated aluminum case of efficient structure are carried in the power-source part.

The analog type peak power meter is carried.

The insulator made of high carbon cast iron is employed as an insulator.

In order to think sound quality as important, the headphone amplifier circuit is built in.

The Ext Pre button, and the preamplifier output / power amplifier input terminal which can carry out independent use of the Puri part and the power part is carried.

The Compensation function which increases the quantity of a low-pitched sound region at the time of small volume is carried.

The remote commander in whom volume control and an input change are possible is attached.

Two option board slots are carried and extension of a digital input board or an analog disc input board is possible.

Rear Option
Power MOS FET An Power

Rating of a mode
Form Integrated stereo amplifier
Rated continuation average output
(Both channel operation, 20Hz - 20kHz)
150 W/ch (it restricts to 1 ohm and a music signal)
120 W/ch (2ohms)
60 W/ch (4ohms)
40 W/ch (6ohms)
30 W/ch (8ohms)
(Both channel operation, 20Hz - 20kHz)
0.05% (2ohms)
0.02% (4ohm-16ohm)
IM distortion 0.01%
Frequency response High Level input/Main input:
20Hz-20kHz+0 -0.2 dB (at the time of a rated continuation average output)
2Hz-150kHz+0 -3.0dB (at the time of 1W output)
Dumping factor 120 (8-ohm load, 50Hz)
Input sensitivity/impedance
(An Output power / EIA1W output)
High Level input: 61.7mV/11.3mV/20kohm
Balanced input: 61.7mV/11.3mV/40kohm
Main input: 0.617V/113mV/20kohm
An Output voltage/impedance Pre output: 0.617V/50 ohm (at the time of a rated continuation output)
Gain High Level input -> Pre output: 20dB
Main input -> output: 28dB
S/N, input conversion noise
Input short-circuit and A-compensation EIA S/N
At the time of an Output power S/N Input conversion noise
High Level input: 106dB -131dBV 80dB
Balanced input: 92dB -117dBV 80dB
Main input: 118dB -122dBV 102dB
Tone control Low-pitched sound (300Hz): ±10dB (50Hz)
Loud sound (3kHz): ±10dB (20kHz)
Loudness Compensation + 6dB (100Hz, Volume-30dB)
Attenuator -20dB
Power meter Logarithm compression type peak level display
dB scale and the output Direct reading at the time of 8-ohm load
Load impedance 2ohm-16ohm
Headphone jack Conformity impedance: 8ohms - 100ohms
Power source AC100V, 50Hz/60Hz
Power consumption 180W (at the time of no inputting)
280W (Electrical Appliance and Material Control Law)
250W (at the time of an 8-ohm load Output power)
The maximum Dimensions Width 475x height 196x depth of 422mm
Weight 25.0kg
Attachment Remote commander RC-29
AC power cord
Option: Option board
With no picture Line-in board Line-9 (6,000yen)
The common high-level input terminal of an imbalanced system.
Analog signals, such as CD player and a tuner, are played.

With no picture Analog disc input board AD-9 (30,000yen)
All cartridges are supported by loading of a high gain equalizer.
With an internal DIP switch, a MM/MC change, MC input impedance, and Subsonic-Filter on/off can be set up.

MM Gain: 36dB
Input impedance: 47kohm
MC Gain: 62dB
Input impedance: 10, a 30 or 100-ohm change
The Line-in board Line-10 (8,000yen)
The common high-level input terminal of an imbalanced system.
Analog signals, such as CD player and a tuner, are played.
The Analog disc input board AD-10 (50,000yen)
All cartridges are supported by loading of a highly efficient high gain equalizer.
With an internal DIP switch, a MM/MC change, MC input impedance, and Subsonic-Filter on/off can be set up.

MM Gain: 29dB
Input impedance: 47kohm
MC Gain: 60dB
Input impedance: 10, a 30 or 100-ohm change
With no picture Digital input board DAC-10 (50,000yen)
A MDS (multiple 冱igma) system D/A converter is carried, and the input terminal of the same axle/light is carried.
The digital music signal (32kHz - 96kHz of sampling frequencies/24 bits) is supported.

DAC-10 cannot be used for E-407, E-406V, E-306V, E-211, and C-265.