SANSUI AU-07 Anniversary Model
¥ 450,000 (released in 1996)
Commentary
This model was released in commemoration of the 20th anniversary of the 07 series which is a representative series of Sansui.
It uses an Advanced Hyper α -X balanced circuit developed to reduce dynamic distortion in transmission and amplification process to 0 during operation.
Both the power stage and driver stage of the vertically symmetric balanced constant current power supply are closed loop, and the operating environment with absolute stability is realized through all the system from the sound inlet to the sound outlet.
The NM-LAPT audio-only device is used for the power stage. In combination with the Advanced Hyper α -X balanced circuit and newly developed power system, it is suitable for wide range and brings out the characteristics of the element which eliminates the generation of magnetostriction by the non-ferrous structure to the maximum.
The power supply section is equipped with a large, low-vibration transformer that greatly improves the current supply capability and dramatically increases the regenerative energy at low sound volume.
In addition, it uses a closed loop configuration that is completely independent of ground, and always provides a clean and stable large current.
Even if an ideal circuit is laid out on a board, the circuit is affected by the electrical characteristics and physical properties of the board itself. The AU 07 Anniversary Model uses a Teflon board for the power unit, has extremely low dielectric constant and dielectric dissipation factor, and absorbs vibration due to internal loss. By taking advantage of these characteristics, various effects on signals, such as electromagnetic wave jumping on passing signals in the circuit and interference caused by vibration of the parts that make up the circuit, are effectively eliminated, and the dynamic range from minute level to all directions is expanded, and the purity of passing signals is greatly improved.
It uses reinforced twin monaural construction to minimize vibration generated in the power and signal systems. It prevents L/R interference, adjusts the sound quality to the same level, and controls the natural vibration of the amplifier with an optimum weight balance.
It uses an integrated mechanical feedback technology that cuts off the generation and transmission of vibration by grasping each part and part of the amplifier from a total viewpoint.
Pure copper, Teflon sheet, and Teflon tape are used between the master volume and chassis, between the NM-LAPT and radiator, etc. to effectively block the transmission route of vibration, reducing various vibrations caused by electrical and mechanical actions, and the influence of material properties on sound quality.
Parts are carefully selected through repeated trial listening, and the highest quality materials such as gold-plated lead electrolysis, film condenser and resistor are used to prevent distortion, noise and loss.
The insulator uses gold plated pure copper material with excellent damping characteristics to absorb unwanted internal and external vibrations. In addition, the ground part is covered with real leather to give the latest attention to stability and damping.
For the speaker and direct input connector part, OFC alloy 24-carat hardening gold plated terminal made by WBT Germany with low impedance and high corrosion resistance is used.
Equipped with side wood with polyester mirror finish made of natural precious natural wood for musical instruments.
Aluminum Bonnet / Aluminum Front Panel
All gold-plated input / output terminal
Special curve master volume
Balance / CD/Line compatible power amplifier / direct
Source Power Direct
Phono equalizers (MC, MM)
Rec Selector
Ten gold-plated input terminals
One speaker output terminal
.JPG)
.JPG)
.JPG)
.JPG)
Model Rating
| Type | Integrated amplifier |
| Power Amplifier Unit | |
| Effective power (10 Hz to 20 kHz, simultaneous operation for both channels) |
110W + 110W (6 Ω) 90W + 90W (8 Ω) |
| Total harmonic distortion factor (at effective output) | 0.003% or Less (8 Ω) |
| Mixed harmonic distortion factor | 0.003% or Less (8 Ω) |
| Damping factor | 150 (8 Ω) |
| Frequency Response (1W) | DC ~ 300 khz + 0 db, -3dB |
| Input Sensitivity / Impedance (1 kHz) | 1V/5k Ω |
| Signal-to-noise ratio (A network) | 120 dB or more |
| Dynamic Power | 110W (6 Ω) 140W (4 Ω) 180W (2 Ω) |
| TIM (SAWTOOTH) | Measurement limit value or less |
| Slew rate | 200 V / μ sec |
| Rise time | 0.5 μ sec |
| Preamplifier Section | |
| Input Sensitivity / Impedance (1 kHz) | Phono MM : 2.5mV/47k Ω Phono MC : 300 μ V/100 Ω CD, Tuner, Line, Tape/DAT-1, 2 : 150mV/20k Ω |
| Phono maximum allowable input | MM(THD 0.01%):210mV MC(THD 0.1%):21mV |
| Frequency Response (1W) | Phono MM : 20 Hz to 20 kHz ± 0.2 dB CD, Tuner, Line, Tape/DAT-1, 2 : DC ~ 300 khz + 0 db, -3dB |
| Signal-to-noise ratio (A network) | Phono MM : 90 dB or more Phono MC : 75 dB or more CD, Tuner, Line, Tape/DAT-1, 2 : 110 dB or more |
| Tone control | Maximum variation of Bass : ± 6 dB (50 Hz) Maximum variation of Treble : ± 6 dB (15 kHz) |
| Subsonic filter | 16 Hz (-3dB), 6dB/oct. |
| Loudness | + 6 dB (50 Hz), + 4 dB (10 kHz) |
| <General> | |
| Rated power consumption | 280W |
| External dimensions | Width 471x Height 164x Depth 453 mm |
| Weight | 34.0kg |