Audio Database

The pictorial image of AU-alpha 607L Extra

SANSUI AU-alpha 607L Extra
85,000yen(around the 1989 time)

Description
@
The Integrated Amplifier which adopted LAPT of the transistor only for an audio based on AU-alpha 607Extra.

In order to improve the linearity in Loule Bell, paying attention to the transistor adopted as the power stage, LAPT (Linear Amplification Power Transistor) newly developed only for the audio is adopted.
It is what was put into practice and made nonmagnetic until LAPT eliminates the conventional plating material, and pure-copper material is used for it and it results in a bonding wire, and it serves as a tone-quality peculiar part which is different from the diffusion type currently used conventionally from a production process.
Cut-off frequency is improved also 3 times of elegance 50-60MHz and conventionally by this having eliminated the occurrence of a magnetic distortion and improving the internal structure of an element.

-X balance circuitry is adopted as circuitry. Furthermore, the outstanding high region property is acquired by the NEW diamond differential circuit which made FET of the first rank cascade connection.

The power-source part was placed in the center and the twin monophonic construction which dissociated symmetrically and has arranged the power amplifier part mounted on the large-sized heat sinker is adopted. This cut off the interference of the source of an oscillation which has an ill effect on a tone quality, and the outstanding image orientation is gained.
Furthermore, the thought of no vibrating and an absent resonance was put into practice over the detail, and the product made from pure copper oscillating isolation part is adopted.

The power amplifier direct functionality of two normal inputs is carried.
Since Output voltages, such as a compact disk player, are high, they are sending into power amplifier straight, and can demonstrate a digital characteristic.

Functionalities, such as a Source Direct and an REC serector, are carried.

The 6-unit Detent volume is carried in the volume.

There was real sub- wood as an option.

Internal A LAPT
Using Copper

Rating of a mode
Form Integrated amplifier
<Power amplifier part>
Effective output
(10Hz - 20kHz, both channel drive)
105W+105W (6ohm)
90W+90W (8ohm)
Dynamic power 280W (2ohm)
220W (4ohm)
155W (6ohm)
THD (at the time of an effective output) 0.003% or less (8ohm)
Cross modulation distortion 0.003% or less (8ohm)
Dumping factor 150 (8ohm)
Frequency characteristic (1W) DC-300kHz+0 -3dB
Input sensitivity/impedance (1kHz) 1V/5kohm
SN ratio (A network) 120dB or more
TIM distortion (SAWTOOTH) Below a limit-of-measurement value
Slew rate 180v/microsec
Rise time 0.6microsec
<Pre part>
Input sensitivity/impedance (1kHz) Phono man month: 2.5mV / 47kohm
Phono MC: 390 microvolts/100 ohms
compact disk, Tuner, Line, Tape/DAT1, 2 or 3:150mV / 20kohm
Phono maximum permissible input MM(THD 0.01%):210mV
MC(THD 0.1%):21mV
Frequency characteristic Phono man month: 20Hz-20kHz}0.2dB
compact disk, Tuner, Line, Tape/DAT1, 2, and 3:DC-200kHz+0 -3 dB
SN ratio Phono man month: 88dB or more
Phono MC: 70dB or more
compact disk, Tuner, Line, Tape/DAT1, 2 or 3:110dB or more
Tone control Bass: }6dB (50Hz)
Treble: }6dB (15kHz)
Subsonic Filter 16Hz (-3dB), 6dB / oct
Loudness + 6dB (50Hz), +4dB (10kHz)
<Synthesis>
Power dissipation 250W
Dimensions Width 430x height 160x depth of 450mm
Weight 18.0kg
Option Real sub- wood SW-AU1 (10,000yen)