Audio Database

AU-07 Anniversary Model pictorial image

SANSUI AU-07 Anniversary Model
450,000yen(1996 release)

Description
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The model put on the market in commemoration of birth 20 years of 07 serieses which are typical serieses of ŽR….

The Advanced Hyper alpha-X balance circuitry developed in order to make into zero dynamic distortion by transmit / amplification it1 generated at the time of an operation is adopted.
It was considered as the closed loop also with the power stage and the driver stage of the up-and-down symmetrical balance type constant-current regulated power supply, it let all the systems from the entry point of sound to an outlet pass, and operating environment which is proud of an absolute stability is realized.

Device NM-LAPT only for an audio is adopted as the power stage. In combination with an Advanced Hyper alpha-X balance circuitry and a newly developed power-source scheme, it is suitable for wide-range-ization, and the property of the element which eliminates an occurrence of a magnetic distortion according to a non-iron structure is pulled out to the maximum extent.

By large-sized and a low oscillating transformer, it improves in a power-source part sharply, and the renewal energy in the small sound volume is also raising current-supply-source capacity to it by leaps and bounds.
Moreover, the closed-loop stream composition which carried out full independence from the grounding is adopted, and the clean always and stabilized large current is supplied.

Even if it arranges a circuitry ideal on a substrate, the electrical properties and physical properties which the platform itself has affect a circuitry. With AU-07 Anniversary ModelA Teflon substrate is adopted as a power unit and the property that a dielectric constant and a dielectric dissipation factor are very small, and absorb an oscillation by an internal loss is harnessed,The interference by oscillation of the part which constitutes the jump of electromagnetic waves and circuitry to the passage signal in a circuitry etc. cancels various influences on a signal effectively, and is raising sharply the expansion of the dynamic range from minute level to an omnidirectional, and the purity of a passage signal.

The strengthening twin monophonic construction which protects from a structure side to a min the oscillation generated by the power supply system and a signal system is adopted. An interference of L/R is prevented, similarly a tone is prepared and the natural oscillation of amplifier is controlled by the optimal weight balance.

Each fraction and part which constitute amplifier were caught from the total viewpoint, and the isorated mechanical feedback technology which intercepts an occurrence and propagation of an oscillation is adopted.
Pure-copper material, a Teflon sheet, and a Teflon tapes are given between NM-LAPT and a radiator etc. between a master volume and a chassis, and the propagation root of an oscillation is intercepted effectively. The influence on various oscillations generated by the electric, mechanical operation, etc. and the tone which the physical properties of a material bring about is suppressed.

It selected carefully repeating an audition to a part, and electrolysis of a golden plating bar, a film capacitor, a resistor, etc. adopted the thing of the highest level, and have prevented the occurrence of distortion, a noise, and a loss.

What carried out the gilding treatment of the pure-copper material with the outstanding damping characteristics is adopted as an insulator. The interior and a foreign unnecessary oscillation are absorbed. Furthermore, the newest attention is paid to a stability and vibration suppression nature, such as using [ which will carry out this skin ] a shorted-to-ground fraction.

The OFC composition and the 24k hardening gilding termination made from German WBT with a high corrosion resistant are adopted as the connector part of a speaker and a direct input by the low-impedance.

The sub- wood which carried out polyesters specular surface finish of the natural precious wood Naked material for musical instruments is equipped.

An aluminum bonnet / aluminum front panel

All gilding input/output terminal

Special curve master volume

The power amplifier direct corresponding to a balance/compact disk/Line

Source power direct

Phone equalizer (MC, man month)

REC serector

Ten gilding input terminals

One speaker output-terminal

AU-07 Anniversary Model Black version The part of AU-07 Anniversary
The interior of AU-07 Anniversary
The block diagram of AU-07 Anniversary

Rating of a mode
Form Integrated amplifier
<Power amplifier part>
Effective output
(10Hz - 20kHz, both channel simultaneous operation)
110W+110W (6ohms)
90W+90W (8ohms)
THD (at the time of an effective output) 0.003% or less (8ohms)
Cross modulation wave distortion 0.003% or less (8ohms)
Dumping factor 150 (8ohms)
Frequency characteristic (1W) DC-300kHz+0dB, -3dB
Input sensitivity/impedance (1kHz) 1V/5kohm
SN ratio (A network) 120dB or more
Dynamic power 110W (6ohms)
140W (4ohms)
180W (2ohms)
TIM distortion (SAWTOOTH) Below a limit-of-measurement value
Slew rate 200v/microsec
Rise time 0.5microsec
<Preamplifier part>
Input sensitivity/impedance (1kHz) Phono man month: 2.5mV / 47kohm
Phono MC: 300 microvolts/100 ohms
compact disk, Tuner, Line, Tape/DAT-1 or 2:150mV /, 20kohm
Phono maximum permissible input MM(THD 0.01%):210mV
MC(THD 0.1%):21mV
the frequency characteristic (1W) Phono man month: 20Hz-20kHz}0.2dB
compact disk, Tuner, Line, Tape/DAT-1, 2:DC-300kHz+0dB, -3dB
SN ratio (A network) Phono man month: 90dB or more
Phono MC: 75dB or more
compact disk, Tuner, Line, Tape/DAT-1, 2:110dB or more
Tone control The Bass maximum variation: }6dB (50Hz)
The Treble maximum variation: }6dB (15kHz)
Subsonic Filter 16Hz (-3dB), 6dB / oct
Loudness + 6dB (50Hz), +4dB (10kHz)
<Synthesis>
Power dissipation 280W
Dimensions Width 471x height 164x depth of 453mm
Weight 34.0kg