The Integrated Amplifier which aimed at correspondence to a next-generation
audio by improving to PMA-390III.
Each of the volume circuit, the tone
circuit, and the power amplifier circuit was improved, and the maximum of the
frequency response at the time of real use is improved to 100kHz. Furthermore,
by improving a volume circuit, the noise generated within amplifier at the time
of real use was stopped, and the improvement of resolving power has been
HC (High Current) single push pull circuit which inherited the
thought of the UHC single push pull circuit carried in S series is carried.
Current supply capacity and peak current have adopted as a magnification
element HC-transistor with the capability to be twice many as the usual
The Schottky barrier diode adopted as PMA-2000III is adopted
as a rectifier circuit. Sound quality with few noises has been obtained by the
low noise characteristic and the large current characteristic by high-speed
In order to stop the power consumption by the standby at the
time of remote power-off, the power transformer for exclusive use is carried in
each of a microcomputer circuit and an audio circuit. Not only reduction of the
power consumption at the time of standby but the interference with the
microcomputer to an audio circuit was eliminated by this, and high-quality
sound-ization is also realized.
When microcomputers, such as the time of
listening, do not control, the microcomputer stop mode which stops all the
operation of a microcomputer is carried. The clock oscillation of a
microcomputer stops at the time of the usual listening, and inflow of the noise
to an audio system is suppressed.
S.L.D.C. (Signal Level Divided
Construction) which makes a small signal circuit, the Taishin number circuit, a
microcomputer circuit, etc. separate, and suppresses interference between
circuits is adopted.
Moreover, an inactive gas enclosure relay is adopted as
the input change of CD and Phono, and generating of the noise which becomes a
cause which soils sound is suppressed.
The sauce direct function which
bypasses the control circuit of Bass, Treble, Loudness, and Balance is carried.
The pre-out terminal is carried.
Back recording of dubbing etc.
is possible from CD to MD, carrying the Lec out selector and hearing a record.
By remote control, operation of the change of main volume and a
function, muting, and remote power on/off (three AC outlet linkage) is possible.
Furthermore, CD of DENON, MD recorder, a tuner, and a cassette deck can be
|<Power amplifier part>
|Output power (both channel drive)
||50W+50W (8 ohms, 20Hz - 20kHz, THD 0.1%)
|Practical use maximum except take-off
||100W+100W (4 ohms, 1kHz, EIAJ)
||0.01% (1kHz, 8ohms)
|Speaker output terminal
||Speaker AorB: 4ohms - 16ohms
||Phono MM: 2.5mV/47kohm
150mV/47kohm (sauce direct-on)
||5Hz-100kHz+0 -3 dB
|Signal to noise ratio
(the auditory sensation weighting A, input short circuit)
|Phono MM: 86dB (at the time of a 5mV input)
Line: 107dB (sauce direct-on)
||Bass: ±8dB (100Hz)
Treble: ±8dB (10kHz)
||+ 6dB (100Hz), +6dB (10kHz)
|Power supply voltage
At the time of standby: Less than [
|Dimensions (a base, a knob, a terminal
||Width 434x height 121x depth of 338mm
|Attachment: Wireless remote
||Width 54x height 155x depth of 29mm