Used sansui 607 for sale

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Pre-main amplifier that adopts α -X balanced circuit và NEW đá quí differential circuit.It uses an α -X balanced circuit and a balanced amplification method in which noise is naturally canceled.

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This circuit differs from conventional amplification circuits in that not only the signal is amplified but also the power supply is not grounded.In addition, the AU - α 607 Extra uses a NEW đá quí differential circuit and reduces the impedance of the entire circuit to further improve the quality.In addition, the speaker drive is not driven between the output of the amplifier và ground as in the past. Instead, it is driven from both directions on the + side of the speaker equal to lớn the - side.

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This is a double push-pull method, which responds lớn changes in impedance và phase.NEW đá quí differential circuit with cascade connection of FET used in the first stage is adopted.This reduces the influence of connected devices on sound chất lượng due to lớn differences in đầu ra impedance when power amp direct is used.The power nguồn supply section uses SANSUI's unique balanced power nguồn supply, which is independent from the ground & has a closed loop.The + and - currents are always equal, eliminating the negative effects of unbalanced power on the music signal.In addition, the parts used are custom electrolytic capacitors developed for large power nguồn transformers and audio equipment.The structure of the amplifier uses twin monaural construction.The power supply section is placed in the center và the power amplifier section mounted on a large heat sinker is arranged symmetrically & separately. In addition to achieving stability, the power nguồn supply section is compatible with crosstalk caused by differences in signal levels between L/R units, & interference between power supply system vibration và music signals.It is equipped with a power nguồn amplifier direct switch và two normal inputs.It uses a chất lượng "direct access rotary switch" in which the source of the input đầu vào system is selected inside the rear terminal. The tương tác part of the rotary switch is gold-plated in pursuit of high quality.It is equipped with a source direct switch & can be played back without using auxiliary circuits such as balance volume, muting, và subsonic filter.


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Model Rating
Type Α -X Balanced Integrated Amplifier
Power Amplifier Unit
Effective output đầu ra (10 Hz to đôi mươi kHz, both channels driven) 6 Ω : 105W + 105W8 Ω : 90W + 90W
Total harmonic distortion factor (at effective output) 0.003% or Less (8 Ω)
Frequency Response (1W) DC ~ 300 kHz, + 0 -3dB
Cross modulation distortion factor 0.003% or Less (8 Ω)
Damping factor 150 (8 Ω)
Input sensitivity 1V(Normal)
Signal-to-noise ratio (A network) 120 dB or more
TIM (SAWTOOTH) Measurement limit value or less
Slew rate ± 180 V / μ sec
Rise time 0.6 μ sec
Input Sensitivity / Impedance (1 kHz) Phono mm : 2.5mV/47k ΩPhono MC : 300 μ V/100 ΩCD, Tuner, Line, Tape Play1 ・ 2 ・ 3 : 150mV/20k Ω
Phono maximum allowable input MM(THD 0.01%):210mVMC(THD 0.1%):21mV
Frequency characteristic Phono milimet : trăng tròn Hz to lớn 20000 Hz, ± 0.2 dBCD, Line : DC ~ 300 khz, + 0 -3dBTape Play-1, 2, 3 : 1 hz to lớn 300 khz + 0 -3dB
Signal-to-noise ratio Phono mm : 88 dB or morePhono MC : 70 dB or moreCD, Tuner, Line, Tape Play-1 / 2 / 3 : 110 dB or more
Tone Control Maximum Change BASS : + / - 6 dB at 50 HzTREBLE : ± 6 dB at 15 kHz
Subsonic filter 16 Hz (-3dB), 6dB/oct.
Loudness 50Hz:+8dB10kHz:+6dB
Audio Muting -20dB
Rated power consumption (Electrical Appliance & Material Control Law) 250W
External dimensions Width 430x Height 160x Depth 450 mm
Weight 18.0kg