|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.
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.
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.
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.
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
|<Power amplifier part>
|Music power (IHF)
|Cross modulation distortion
|Power Band Width (IHF)
||10Hz - 30kHz
||5Hz - 100kHz
|A hum and a noise
||15Hz - 70kHz
|A hum and a noise (IHF)
Tape mon (Pin/Din): 200mV
||Bass: +12dB--8dB (20Hz)
Treble: +12dB--8dB (20kHz)
||Bass:Defeat, 200Hz, 400Hz
Midrange:Defeat, 1kHz, 2kHz
Treble:Defeat, 6kHz, 3kHz
|A low filter
|A high filter
||Width 461.5x height 155x depth of 316mm
||Wood case C-17 (3,900yen)