Audio Database


85,000yen(February, 1970 release)

The Integrated Amplifier which hits the upgrade version of AU-777D in the highest-class model of PB series of an SANSUI.
Aiming at the play of a more faithful sound, the thorough listening comprehension test was accumulated and it was developed.

The main-amplifier part has adopted the perfect direct coupling system of plus-or-minus 2 power source of a two-step differential-amplification circuitry and an output Capacitor-Less. NFB became equal from a super-high region to super-low-pass one by this, and many properties are improved.

The PNP silicon transistor with few noises is used for the equalizer stage with the three-step E-E NF type, and it has acquired a low-noise, a low distortion, an extensive dynamic range, and high stability.

The hardwired-connection circuitry is used for the amplifying circuit as much as possible, the required fraction of the coupling capacitor used the Mylar capacitor as much as possible, and the phase distortion in a high region has banished the bad large electrolytic capacitor of a transmission characteristics.

The triple tone control original with an SANSUI is adopted as a tone control part, and Bass and not only Treble but a coordination of Midrange is possible.
The tone selector with which a defeet, and a going up point and a descending point are changed to two frequencies, respectively, low and the loud sound of 2dB which can perform an exact coordination, and the it1 step type of inside sound the step of 1dB are adopted.

A pre-main part is separated and an independent using is possible.

Two tape decks can use it simultaneously and carry the TapetoTape reprint switchpoint.
Moreover, a stereo balance check circuitry, a level adjuster, NF type row / high filter, a tuner selector, a mike input jack, the muting switch, the special-NetWare-program indicator, the headset jack, the DIN connector, etc. are carried.

The wood case was an option.

Rating of a mode
Form Integrated Amplifier
<Power amplifier part>
Effective output 70W/70W (4ohm)
80W/80W (8ohm)
Music power (IHF) 180W (4ohm)
140W (8ohm)
THD 0.4%
Cross modulation distortion 0.4%
Power Band Width (IHF) 10Hz - 30kHz
Frequency characteristic 5Hz - 100kHz
Stereo separation 50dB
A hum and a noise 100dB
Input sensitivity/impedance 1V/40kohm
Load impedance 4ohm-16ohm
Dumping factor 45 (8ohm)
<Preamplifier part>
Output power 1V
THD 0.1%
Frequency characteristic 15Hz - 70kHz
A hum and a noise (IHF) Phono1, 2:80dB
Tuner, Aux: 85dB
Input sensitivity Phono1, 2:2mV
Tuner, Aux, Tape mon (Pin/Din): 200mV
Sound-recording output Tape rec(Pin):200mV
Tape rec(Din):30mV
Tone control Bass: +12dB--8dB (20Hz)
Midrange: ±5dB (1kHz, 2kHz)
Treble: +12dB--8dB (20kHz)
Tone selector Bass:Defeat, 200Hz, 400Hz
Midrange:Defeat, 1kHz, 2kHz
Treble:Defeat, 6kHz, 3kHz
A low filter -20dB(20Hz)
A high filter -18dB(20kHz)
Muting -20dB
Power consumption 370W
Dimensions Width 461.5x height 155x depth of 316mm
Weight 17.5kg
Option Wood case C-17 (3,900yen)