Audio Database

The

DIATONE DA-U880
59,800yen(around the 1983 time)

Description
 
It is the Integrated Amplifier which adopted direct-current servo system.

direct-current servo circuit is adopted as control amplifier and each power amplifier. FET is used for the first rank. Thereby, clear sound quality is realized from super-low-pass one to a high region.

A slew rate is improved in order to improve the high region characteristic. The output signal considered it as the high speed amplifier which rises to 100V among 1micro/sec, and wide-range-ization is realized.

The equalizer circuit is thought as important aiming at the improvement in the engine performance as control amplifier.
NF fixed from low-pass to a high region is applied with an original system, and stability and sound quality are raised.
Furthermore, the influence of complicated wiring is suppressed by the constant current drive.

The gain of equalizer amplifier is switched by a switch and MC cartridge is supported.

The peak level is displayed with the fluorescent display in the front.

An active filter is adopted as both the compasses of High and Low. It is possible to acquire the sharp characteristic without using a coil and to cut only the zone of hope certainly.

In order to lose the influence of CR circuit and to make a frequency response into a flat, the tone-defeat circuit was adopted, and sound quality degradation by tone control is prevented.

It is possible to record an FM broadcast, hearing a record by becoming independent about a recording selector.

The speaker selector of A, B, and A+B is adopted.
Furthermore, a speaker protection circuit is built in, an over-current and direct-current voltage are detected, and you are told with warning-sign light.


Rating of a mode
Form direct-current servo composition Integrated Amplifier
Output (10Hz - 20kHz, THD 0.008%) 55W+55W (8ohms)
THD (an Output power, 8ohms) 0.008%
Output bandwidth (IHF 0.1% distortion, 8ohms) 5Hz - 100kHz
Input sensitivity/impedance Phono MC:70dB
Phono MM:86dB
Tuner, AUX, Play: 120dB
Power source AC100V 50Hz/60Hz
Power consumption 150W
Dimensions Width 427x height 135x depth of 397mm
Weight 10.5kg