Sansui AU-D607X DECADE Balanced Stereo Amplifier with Phono (Sold)

Made In Japan

Seri AU-D607X Decade merupakan seri "Limited Edition" dan hanya dibuat untuk pasaran di Jepang saja. Seri ini menggunakan tehnologi Sansui yang terbaru yaitu X Balance Circuit. Buatan th 1985

Sansui/山水AU-D607X Decade 十周年纪念版









Decade Series Integrated amplifier of which adopted the twin diamond X balance amplifier

 The basic configuration of the amplifier is adopted the twin diamond X balance amplifier.
 The current to the speaker in the conventional amplifier is sent from the + side, - side had simply become a single drive that is connected to the ground.  Therefore, back electromotive force - and flows into the side of the earth, IHM distortion caused by the mutual interference between the ripple current and the like of the current had occurred.  Also, only the + side NFB for reducing distortion, - side was the state of being not controlled at all.
 Twin Diamond X balance amplifier, signal circuit from input to output, the power supply circuit, all the NFB circuit has a balanced structure, the speaker + and - Effect of ground by being equally driven from both sides I have to eliminate.
 Furthermore, in order to activate the power transistor more effectively, it has improved the speaker drive capability by a two-stage configuration for current-driving the power transistor in a twin diamond differential circuit.

 Power supply unit has a three-way power supply, and a dedicated power supply of pre-drive / equalizer, by the left and right two independent power with the aim to respond to high-power play.  It also is suppressed effect on the outside while suppressing the variation due to the influence from the outside by a balance power supply that is completely isolated from ground.

 REC is the selector has the OFF position provided.
 Etc. When the OFF tape deck connected by this, signal current flows in front of the device, and is then returned from the preceding stage to the amplifier, but prevents the distortion occurs.

 Subsonic Filter, tone control, loudness, and is equipped with features such as muting.

 I have adopted the AC power cord with a polar window.

 The equalizer part I have adopted the Hi-Precision equalizer high gain by discrete configuration.
 This circuit has a compatible type by gain switching, MC, High-MC, in any type of cartridge of MM is supported.  


Model   Integrated DC amplifier  


 



Effective output (10Hz ~ 20kHz, both ch drive)   105W + 105W (6Ω)
                                                90W + 90W (8Ω)  
Total harmonic distortion (10Hz ~ 20kHz)   0.003% (8Ω, when effective output)
                                           0.005% (6Ω, 1/2 at the effective output)  
Intermodulation distortion (60Hz: 7kHz = 4: 1)   0.003% (8Ω, when effective output)  

Output bandwidth (IHF, both ch behavior, THD0.03%)   5Hz ~ 70kHz  

Damping factor (new IHF, 20Hz ~ 20kHz)   80 (6Ω)  

Frequency characteristic (1W)   DC ~ 300kHz +0 -3dB  
Slew rate   ± 180V / μsec (6Ω)  
Rise time   0.6μsec  


 

Input sensitivity / input impedance (1kHz)   Phono MM: 2.5mV / 47kΩ
                                            Phono High MC: 2.5mV / 100Ω
                                            Phono MC: 300μV / 100Ω
                                            CD, Tuner, Tape1,2 / PCM: 150mV / 47kΩ  

Phono maximum permissible input (1kHz, THD 0.01%)   MM: 300mV
 High MC: 300mV
 MC High: 30mV  
SN ratio (A network, short circuit)   Phono MM: 88dB
 Phono MC: 70dB
 CD, Tuner, Tape: 110dB  

Tone control   Bass: ± 10dB (50Hz)
              Treble: ± 10dB (10kHz)  
              Subsonic Filter   16Hz (-3dB, 6dB / oct)  
              Muting   -20dB  


 
Rated power consumption (Electrical Appliance and Material Control Law)   230W  
External dimensions   Width 466 × height 161 × depth 431mm  
Weight   15.0kg  




Note : Attached With Stepdown Transformer 500Watt





Price : RM Sold
Contact Simon Ting 012-3612507