SANSUI AU-D607G Extra

Commentary

An integrated amplifier based on the AU-D607F Extra with improvements such as ground and floating circuits.

Newly developed ground floating circuit is mounted.
This circuit was developed after reviewing the ground circuit of the amplifier. The output amplifier, load (speaker) and power circuit are completely closed loop. In addition, the power supply section is a floating power source, and the power transformer winding is made independent by plus and minus, each of which is rectified by two bridges. This circuit eliminates the interference of the input, output and power in the ground circuit.
As a result, IHM distortion which is harmful to sound quality is minimized.

Two independent power supply systems are used for the power supply section and a newly developed high-linearity capacitor with low impedance and large capacity is used for the electrolytic capacitor.

Equipped with linear step MC transformer to support MC cartridge.
In addition, the load impedance for the MM cartridge and the load impedance for the MC cartridge are made independent and the optimum load is installed to enable amplification with higher purity.

The pre-drive stage of the power amplifier is equipped with a diamond differential circuit, and the power stage is equipped with a super FF circuit. This circuit has the same circuit configuration as the AU-D707G Extra.
In addition, the high-speed element NM-LAPT is employed to improve the characteristics.

The equalizer uses a Hi-Precision equalizer to achieve a wide range of RIAA deviation of 20 hz to 300 khz ± 0.2 db.
In addition, a linear servo regulator is used for the power supply, enabling a stable power supply.

Equipped with a subsonic filter.

Equipped with terminals for DA and PCM.

Uses a power cord with polarity display.

It uses heat pipes and NM elements to provide a simple and straight signal path and measures against magnetostriction.

Two systems can be connected by twin relay speaker switch.

It has a recording selector with two independent sources and a two circuit tape monitor.

There are 2 color variations of black and silver.

Model Rating

Type	Integrated DC amplifier
Power Amplifier Section (Ground Floating, Super Feedforward & DD/DC System)
Effective power	90W + 90W (8 ohm, 10 hz to 20 khz, THD 0.003%) 90W + 90W (8 ohm, 1 khz, 0.002% THD)
Total harmonic distortion factor (10 Hz to 20 kHz at effective output)	0.003% or Less (8 Ω)
Intermodulation Distortion Factor (60 Hz : 7 kHz = 4 : 1, SMPTE)	0.003% or Less (8 Ω)
Output Bandwidth (IHF, both channel operation, THD 0.02%)	5 Hz ~ 70 kHz (8 Ω)
Damping factor (new IHF, 20 Hz to 20 kHz)	100 (8 Ω)
Frequency Response (1W)	DC ~ 300 khz + 0 -3dB
Envelope distortion	Below the measurement limit
TIM Strain (Sawtooth method)	Below the measurement limit
Slew rate	± 180 v / μ sec (8 Ω)
Rise time	0.8 μ sec
<Equalizer amplifier (Hi-Precision DC servo equalizer)>
Input Sensitivity / Input Impedance (1 kHz)	Phono1, 2 mm : 2.5mV/47k Ω Phono1, 2 mc : 120 μ V/3 ~ 40 Ω Tuner, Aux/DA, Tape/PCM play1, 2 : 250mV/27k Ω
Phono maximum allowable input (1 kHz, THD 0.01%)	MM:200mV MC : 10 mv, TRANS system
Output Level / Impedance (1 kHz)	Tape rec (PIN) : 250 mv (47k Ω) / 600 Ω
Total harmonic distortion factor (20 Hz to 20 kHz at 5 V output)	Phono1, 2 MM : not more than 0.005% Phono1, 2 mc : TRANS system
RIAA Deviation (MM, Rec out)	20 Hz to 300 kHz ± 0.2 dB
Signal-to-noise ratio (A network, short circuit)	Phono1, 2 mm : 88 dB or more Phono1, 2 mc : 79 dB or more (120 μ V) Tuner, Aux/DA, Tape/PCM play1, 2 : 110 dB or more
Phono input equivalent noise (A network, short circuit)	Phono1, 2 mm : -140dBV Phono1, 2 mc : -157dBV
Channel Separation (1 kHz)	Phono1, 2 mm : 60 dB or more Phono1, 2 mc : 50 dB or more Tuner, Aux/DA, Tape/PCM play : 80 dB or more
Tone control	Bass : ± 6 dB (50 Hz) Treble : ± 6 dB at 10 kHz
Filter	Low : 16 Hz (-3dB, 6dB/oct.)
Audio Muting	-20dB
<General>
Rated power consumption (Electrical Appliance and Material Control Law)	220W
External dimensions	Width 460x Height 160x Depth 404 mm
Weight	13.5kg