The Integrated Amplifier which carries an optical Class A circuit.
optical Class A circuit is adopted, a power amplifier part is made to amplify a
musical average level as a pure Class-A, and it is amplifying in it using the
non switching Class-A system which has an effect in the improvement of crossover
distortion or switching distortion at the time of the Oide power.
the magnification system by the size of an input level,It is a thing which the
newly developed bias control circuit is carrying out and will make an optical
element transfer of the control signal from this bias control circuit to a power
transistor bias circuit and to do,While eliminating completely the main signal
system and an interference mutual [ between bias controlling circuits ], high
speed-ization of bias control is realized.
The large-sized power
transformer is adopted as a power-source part, and the electrolytic condenser of
8,200 micro Fx4 is carried in the block capacitor.
Buffer amplifier is
carried in the preceding paragraph of volume control, the impedance of a volume
control circuit is lowered, and improvement in the signal to noise ratio at the
time of real use is aimed at.
Furthermore, improvement in the separation between right-and-left channels and between functions is realized.
CD Direct terminal is carried and the high play of direct sending and purity is
enabled for the signal from CD player to power amplifier only by the change of
the selector switch.
The processor loop function in which a graphic
equalizer, a surround processor, etc. are connectable is carried.
equalizer amplifier in which a MC/MM change is possible is carried.
by bracelet plate of the 3 total structure which sandwiched the macromolecule
sheet with the sheet steel of two sheets is added to the usual bottom chassis,
the sheet steel of one more sheet is further put on it, and the rigidity of the
chassis is sharply improved to it.
Furthermore, vibration is absorbed by top covering damper material, resonance
is suppressed, and high rigidity-ization is attained.
Functions, such as tone control with a tone defeat,
loudness control, and a Subsonic Filter, are carried.
The reset type
high-speed protection circuit is adopted.
|<Power amplifier part>
|Output power (20Hz - 20kHz)
||Processor loop input: 150mV/15kohm
||0.05% (20Hz - 20kHz, 48W, 8ohm)
|A dynamic characteristic / dynamic power
||5Hz - 50kHz (Output 48W, 0.5%, 8ohms)
|Line-in frequency response
||4Hz-100kHz+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: 390mW (8ohms), 8-400-ohm conformity
||Phono MM: 2.5mV/47kohm
CD, Tuner, Aux1, 2:150mV/47kohm
CD Direct, Tape1,
|The maximum except take-off/Output power
||0.003% (Rec out & Processor Loop out,
||20Hz-50kHz±0.3dB (MC-Rec out & Processor
|Signal to noise ratio
(an input short circuit, the auditory sensation weighting A)
Phono MC: 62dB (at the
time of a 0.25mV input)
CD, Tuner, Aux1, 2:103dB
CD Direct, Tape1,
|Tone control characteristic
||Bass: ±10dB (100Hz)
||16Hz, -12 dB/oct
|Loudness control characteristic
|Power supply voltage
(it is an included about a base, a knob, and a terminal)
|Width 434x height 145x depth of 363mm