|138,000yen(around the 1986 time)
The Integrated Amplifier which corresponded to CD age, supplied the design
philosophy of separate amplifier, polished all the circuits, and was crowded.
The dual super unreturned circuit is carried in the power amplifier
This circuit is constituted from a distortion servo circuit which
negates distortion mutually and suits it with each transistor of N channel of a
power stage, and P channel, and has composition without a NFB circuit.
this, the access speed of a signal improves because there is no NFB loop, and
dynamic distorted generating is suppressed.
Moreover, it not only makes
static distortion into zero, but since distorted removal capability is
excellent, it is carrying out distorted removal to the high order
higher-harmonic-wave distorted domain of a super-high region signal.
Furthermore, since there is no NFB loop, in order that the influence of the
back electromotive force etc. may not reach a voltage magnification stage at the
time of speaker connection, either, dynamic distorted generating is suppressed.
The thing of Pc130W was adopted as the power transistor, and the
parallel push pull complimentary circuit is adopted.
All the signal
courses are made into the perfect Capacitor-Less (perfect direct-current
In addition to the toroidal transformer of 390VA, the
first recovery diode of block condenser (12,000micro-Fx4) + high-speed
rectification of phi50x100mm is adopted as a power-source part.
Furthermore, about the same stabilization as a right-and-left independent power source is
achieved by adoption of the newly developed balanced type electric supply system
floating power source.
In order to play the quality of CD as purely as
possible, CD direct input terminal (gilding finishing) is equipped.
time of the direct switch ON, it is directly linked with volume, and a signal
passes along neither an input selector nor a Rec Out switch, but CD sauce is
connected with power amplifier.
The broadband equalizer amplifier which
connected the differential amplification by low-noise FET to the first rank
parallel is carried.
And the real-time tone control with a turnover change is carried.
|<Power amplifier part>
|Output power (20Hz - 20kHz)
||Tuner input: 150mV/47kohm
||0.003% (20Hz - 20kHz, 70W, 8ohm)
|Cross modulation distortion
||0.002% (an equivalent for 140W, 8ohms)
||Below measurement full limits
||More than }350v/microsec
||5Hz - 80kHz (70W, 0.02%, 8ohms)
||1Hz - 250kHz, and +0 -3dB (1W, 8ohm)
|Output load impedance
||0.1ohm or less
||Speaker: AorB:6-16ohm, A+B:12-16ohm
Headset-jack maximum except take-off: 550mW (8ohms), 8-400-ohm conformity
||Phono MM: 2.5mV/47kohm
(High): 0.25mV/100 ohms
Phono MC (Low): 0.125mV/100 ohms
CDs 1 and 2, CD
Direct, Tuner, Tape1, 2:150mV/47kohm
|The maximum except take-off/Output power
||0.001% (Rec Out, 1kHz, 8V)
||20Hz-100kHz}0.2dB (MC-MM IN-Rec Out)
|Signal to noise ratio
(an input short circuit, the auditory sensation weighting A)
|Phono MM: 90dB (at the time of a 2.5mV
Phono MC: 75dB (at the time of a 0.25mV input)
Line: 110dB (at
the time of a 150mV input)
|Tone control characteristic
||Bass: }8dB (50Hz/100Hz)
||18Hz, -12 dB/oct
|Loudness control characteristic
(Electrical Appliance and Material Control Law)
|Dimensions (a foot, a knob, a terminal
||Width 470x height 167x depth of 446mm