|80,000yen(around the 1976 time)
Control amplifier developed based on the amplifier
technology cultivated for years.
The circuitry of an equalizer part is 7
stone stream compositions by one step of difference input with a constant
current load circuit, and the final stage has adopted the pure complimentary
Class-A push-pull circuit.
Moreover, the transistor with few noise figures
selected carefully was used, and the high operation of stability has been
obtained over the wide band.
Furthermore, the RIAA deflection rectified in a
flat property as a convention has adopted NF elements, such as a metal film
resistor with little error, and a styrene capacitor, with the high order
Input terminals are carried in the right-side side-panel side, and it has adopted the unique structure where an input terminal fraction, an
equalizer substrate, and an input multiple contact switch approach.
Moreover, the shielding wire constituting the cause of a failure of a high
region property is reduced, and the SN ratio is improved.
switching is possible for Input sensitivity and an input impedance so that a
Phono input circuit may be equipped with two circuitries and the performance of
a cartridge can be pulled out.
In addition to the usual tone control,
the coordination of inside compass has also adopted the triple tone control
original with a possible SANSUI as a tone control.
Circuitry has obtained
operational stability for one step of differential by the 2 steps of includeds
amplifying circuit including the flat amplifier of the preceding paragraph.
Moreover, low and the tone control circuit for loud sounds are made to become
independent of the object for the inside compasses of a mid range, respectively, and it is made to operate with exclusive amplifier.
turnover-frequency switchover which can perform tone control over a larger span
is carried, and it can change to three steps of low-pass and a quantity region
A tone control circuit can be bypassed with a defeet switchpoint.
The sharp active type of a barrier property is adopted as a low filter
using a low-noise transistor. A selection of two-step switching is possible for
a barrier property.
Moreover, by an out position, a signal is bypassed not
passing through a filter circuit.
Two-step switching is possible also
for a high filter like a low filter.
They are able for damping curves to
differ, respectively and to use properly according to noise statuses, such as
tape hiss in a high region, and a scratch noise. Moreover, by an out position, a
signal is bypassed not passing through this filter circuit.
decks can be used and a tapes play functionality and a tape-copy functionality
can perform them independently, respectively.
Moreover, when not using the
deck, it has an off-position for the decks and the electric influence by the
load impedance of the deck are connected can be prevented.
succession good transformation highly precise 4-unit volume is adopted as a
Moreover, since a this 4-unit type volume is a scheme narrowed down by
both by the side of an input and an output, there are few remains noises
and they are improving the practical SN ratio.
In order to operate each
circuitry stably, the regulation has adopted the power transformer which is good
and has little leakage magnetic flux.
The low stabilized power source of source impedance is adopted, and ±2 power source is supplied to all the
- Carry an audio muting switch of 20dB.
multiple contact switch which can be chosen by one-touch control is carried.
The mode switch of a stereo / reverse / L+R/L/R
selector is carried in the front panel.
The amplifier only for headphone
is built in.
The muting circuit which erases the it1 noise at the time
of power-source on-off is built in.
||Stereo control amplifier
|Output voltage (Output power)
||Preamplifier output: 1V
output (Pin/Din): 150mV/30mV
|Maximum output voltage (1kHz)
||12V (less than THD 0.1%)
||0.03% or less
|Cross modulation distortion (Aux,
||0.03% or less
|Frequency characteristic (Output power)
||10Hz-80kHz+0.5 -1 dB
|RIAA deflection (20Hz - 20kHz)
|Channel separation (an Output power, 1kHz)
||60dB or more
|SN ratio (IHF, A network, a short circuit)
||More than Phono1:75dB
Aux, Tape mon:
90dB or more
|Input sensitivity/impedance (an Output
||Phono1:2mV, 4mV, 8mV / 30kohm, 50kohm,
Aux, Tuner, Tape play:150mV /, 50kohm
|Phono maximum permissible input
||1000mV (1kHz, THD 0.1%, Input sensitivity of
||Bass: ±10dB (30Hz)
Treble: ±10dB (20kHz)
||Bass: 600Hz, 300Hz, 150Hz
|A low filter
||- 3dB (20Hz), 12dB / oct
- 3dB (60Hz),
12dB / oct
|A high filter
||- 3dB (7kHz), 6dB / oct
- 3dB (12kHz),
12dB / oct
||Width 460x height 176x depth of 345mm