|178,000yen(around the 1987 time)
The pure Class-A Integrated Amplifier which built in the D/A converter.
He is conscious also of the quality at the time of small power, and it
has become Class-A magnification up to 1W output (8ohms).
As for Class-A
push pull operation, there is little distortion, the ripple of the zero crossing
neighborhood of sy copy power current through which it flows into transistor of
one of the two is not pulse-like, and since it becomes continuously,
transitional / secondary accident does not produce it not only in an electric
target but in mechanical vibration, such as a transistor and a heat sink.
In order to correspond to the rise in heat of Class-A magnification, the
fin of a heat sink is doubled, heat conduction unites a block firmly on both
sides of the good quick copper plate of oscillating attenuation, and it is
planning high heat resistance and no resonating.
A power stage is a
parallel push pull of the power transistor of Pc130W, and has original super
A large-sized power transformer, the fast
recovery diode of high-speed rectification, the 48,000-micro F electrolytic
condenser for audios, etc. are adopted as a power-source part.
is attained by adoption of the balanced type electric supply system floating
Moreover, the large-sized heat sink has separated the
power-source part and the main signal system.
The Phono equalizer
corresponding to MC/MM is carried.
The first rank is the equalizer
direct-current amplifier which connected the differential amplification by
low-noise FET parallel, and has also strengthened the power source.
Moreover, the Subsonic Filter only for Phono is also carried.
push pull super linear converter is adopted as a D/A converter.
converter carries out the work to which the D/A converter of every two
right-and-left channels selected carefully resembled the Class-A push pull,
respectively,Furthermore, it consists of 4 time oversampling digital filter,
sampling hold-circuit, and 7th LC-OFCC.A.L.P. (straight line phase) low pass
A digital input part equips the digital input selector by three
coaxial digital inputs, those with two optical digital inputs, and a high-speed
C-MOS logic circuit, identifies CD-DAT-DBS automatically, and transmits it to a
Moreover, in order to lose interference with a converter part, the "Opto-isolated" system by optical combination is adopted.
The digital interface circuit and the D/A converter circuit were
constituted in the separate wiring board, and the meantime is shielded.
exclusive power source made to become independent of a secondary transformer
side was prepared in the interface circuit, and interference of the digital
signal which serves as a lower person of the noise of an analog signal is
The whole was covered with the shielding case which serves as
vibrationproofing of a chassis or a wiring board, and has prevented that a
digital signal leaks to other analog input units, a control part, and a power
The digital output is carried.
All the input sauce was directly linked with power amplifier, and the Source-Direct switch which can carry out "perfect direct-current-ization" is adopted.
The processor loop
function in which a graphic equalizer etc. is connectable is carried.
Broadband real-time tone control is carried.
A power cord with a
||Digital multi-interface loading Integrated
|<Power amplifier part>
|Output power (20Hz - 20kHz)
||Processor loop input: 150mV/47kohm
||0.003% (20Hz - 20kHz, 70W, 8ohm)
|Cross modulation distortion
||0.002% (an equivalent for 140W, 8ohms)
||670W (2 ohms, below TIM distortion measurement full limits,
and more than slew-rate}350v/microsecond)
||5Hz - 100kHz (Output 70W, 0.5%, 8ohms)
|Line-in frequency response
||1Hz - 150kHz, and +0 -3dB (1W, 8ohm)
|Output load impedance
||0.1ohm or less
||Speaker: AorB:6-16ohm, A+B:12-16ohm
terminal is a direct connection)
Headset-jack maximum except take-off: 550mW
(8ohms), 8-400-ohm conformity
|<An interface / the DAC
|A digital-input/output level / impedance
||Same axle: 0.5 Vp-p/75ohms
light input: Two lines
|Frequency response (0dB)
|Signal to noise ratio (dB for zero, 1kHz)
|Dynamic range (1kHz)
|THD (0dB, 1kHz)
|Channel separation (0dB, 1kHz)
||Phono MM: 2.5mV/47kohm
CD, Tuner, AUX, Tape1, 2, 3(DAT, PB):150mV/47kohm
|The maximum except take-off/Output power
||10V/150mV (Rec Out, Processor Loop Out)
|THD (Rec Out, Processor Loop Out)
||0.001% (1kHz, 8V)
||20Hz-100kHz}0.2dB (IN-Rec Out &
Processor Loop Out)
|Signal to noise ratio
(an input short circuit, the auditory sensation weighting A)
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 (100Hz)
Treble: }8dB (10kHz)
|The Subsonic Filter for Phono
||16Hz, -12 dB/oct
|Loudness control characteristic
(it is an included about a foot, a knob, a terminal, etc.)
|Width 474x height 174x depth of 396mm
Pleuron thickness: 20mmx2