Audio Database

The

DENON PMA-390IV
39,800yen(2000 release)

Description
 
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 obtained.

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 transistor.

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 operation.

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 operated.

Black
Rear
Internal

Rating of a mode
Form Integrated Amplifier
<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)
THD 0.01% (1kHz, 8ohms)
Speaker output terminal Speaker AorB: 4ohms - 16ohms
Speaker A+B: 8ohm-16ohm
<Preamplifier part>
Input sensitivity/impedance Phono MM: 2.5mV/47kohm
Line: 150mV/47kohm (sauce direct-on)
RIAA deflection Phono: 20Hz-20kHz±0.5dB
Output power Pre out:1V(1kHz)
<Synthesis>
Frequency response 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)
Tone control Bass: ±8dB (100Hz)
Treble: ±8dB (10kHz)
Loudness + 6dB (100Hz), +6dB (10kHz)
Power supply voltage AC100V, 50Hz/60Hz
Power consumption 135W
At the time of standby: Less than [ 2W ]
Dimensions (a base, a knob, a terminal included) Width 434x height 121x depth of 338mm
Weight 7.0kg
Attachment: Wireless remote control
Dimensions Width 54x height 155x depth of 29mm
Weight About 100g