Amplificator Technics SU-A707 MOS Class AA, fara telecomanda, poze reale

Technics SU-A707 MOS-FET Class AA

Stare foarte buna, usoare urme pe capac (foto 6, am incercuit cu gaben), face parte din ultima generatie de amplificatoare hi-fi ale marcii.

Fara reparatii.

Telecomanda NU mai este disponibila!

Poze reale! Ce vedeti e ce primiti!

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Specificatii:

Technics SU-A707

VGCA (variable gain control amplifier)
DVD audio ready
Super linearity and super sound quality MOS Class AA circuit
Advanced TA-KEH II electrolyte capacitors for high quality sound
R-core transformer helps eliminate magnetic flux leakage
70W x 2 high power output (DIN 4 ohms)
Technics Remote Control System designed for high sound quality
7 position input selectors (Tape 1, Tape 2/MD, Aux, DVD, CD, Tuner, Phono)
A and/or B speaker selector
Tone controls at VIA TONE position
Balance control
Muting switch (by remote control)
Headphone jack

Manufacturer: Technics
    Model: SU- A707
    Year of construction: 2000/2001
    Made in: Japan
    Color: Black or silver
    Type: Built-in stereo amplifier
    Remote Control: Yes , 45 keys ( RAK SUA11WH )
    Power consumption:
    Dimensions: 430 x 136 x 368 mm ( WxHxD)
    Weight: 7.4 kg
    Price about :


connections

    Number of inputs:
        Phono MM
        AUX
        tuner
        CD
        Tape1
        Tape2/MD
        DVD
    Number of Outputs:
        Tape1
        Tape2/MD


Specifications

    Continuous Power Output : DIN : 70W x 2 ( 4 Ohm) , 55W x 2 ( 8 ohms) / 20Hz to 20kHz : 45W * 2 ( 8 Ohm )
    THD at rated power ( 20H to 20kHz ) : 0.03 % (8 Ohm)
    Frequency response: Phono MM: RIAA curve : + / -1dB ( 30Hz to 15 kHz , CD, AUX , TUNER, TAPE 1 , TAPE2 , DVD: 3Hz to 100kHz (+0 dB , -3dB)
    Signal to noise ratio (nominal ) : Phono MM: 75dB ( 76dB , IHF '66 ), CD , AUX , TUNER, TAPE 1 , TAPE2 , DVD: 102 dB ( 100 dB , IHF '66 )
    Signal to noise ratio ( Rated Power into 4 ohms ) : 114dB (IHF A, S = 2V)
    Input sensitivity and impedance : Phono MM: 2.5 mV/47kOhm , CD, AUX , TUNER, TAPE 1 , TAPE2 , DVD: 150mV/22kOhn


Special Features

    Circuit concept MOS Class AA
    Relay input selector
    Speaker Selector A / B ( behind the lower cover flap )
    Balance / bass and treble controls ( behind the lower cover flap )
    A lower cover of tinted plexiglass opens at the touch

The original low-noise amplifier VGCA (Variable Gain Control Amplifier) is adopted as an amplifying circuit.
The amplifier stream composition which extracts a signal and is amplified after that in the conventional input volume in this circuitry is stopped, and only a part to be amplified gives gain to amplifier by changing the gain of an amplifier part itself, and it is made to operate as buffer amplifier in the gain not more than it. Moreover, the sound-volume control is performed in the volume which interlocks after amplifier. This has realized the play in the usually used volume location of a clearer sound.

The MOS ClassAA circuitry which adopted based on the ClassAA circuitry and adopted MOS FET as the amplification element is carried.
In the ClassAA circuitry, individual amplifier is performing the voltage amplification and the current supply source, and high power and perfect Class-A voltage control are realized.
In the MOS ClassAA circuitry carried in SU-A808, an input impedance is very high in the last stage which controls the output-terminal of pure Class-A voltage control amplifier, and has adopted the amplification element MOS FET excellent in the linearity as it. Moreover, there are few losses, the bipolar transistor which is acknowledged in the Oide power operation is adopted as the final stage of current-supply-source amplifier, and the correspondence to a digital format of a DVD-Audio etc. is aimed at to it according to the class AA bridge effect of demonstrating the benefit of each amplifier to the maximum extent.

Magnetic flux is uniform, R core power transformer with circular core cross-section form is adopted as a power transformer, in order that there may be no joint in a core, there is very little leakage magnetic flux, and the noise occurrence by a magnetic field is suppressed.

The capacitor using the separator which blended the bamboo fiber is adopted as an electrolytic capacitor, and the tone quality which stopped an unnecessary incidental sound is realized.

The gilding RCA termination is adopted.

The speaker termination corresponding to a banana plug is carried.

System remote control is attached.