Audio Database


Technics SE-A808
35,000yen (around the 1980 time)

Stereo power amplifier of a simple stream composition of having constituted from two ICs and one transistor.

The low distortion is realized using IC of an input stage as the differential amplifier of the Current-mirror load intensity from which the operating current of a low distortion can be chosen, and securing a high gain.
Power IC of the output stage consists of pure complementary circuits of a two-step Darlington connection.

Even if a speaker termination short-circuits, the relay type protection circuitry which protects output-stage IC is carried.

The power circuit of the low-distortion 2 power transformer which made the coil the reverse direction and canceled flux is adopted.

Rating of a mode
Form Stereo power amplifier
Output power (at the time of both channel drive) 45W+45W (8 ohms, 20Hz - 20kHz)
50W+50W (8 ohms, 1kHz)
THD 0.02% (at the time of 20Hz - 20kHz, and an Output power)
Output bandwidth 5Hz - -50kHz three dB
Frequency characteristic 5Hz-100kHz+0 -3 dB
SN ratio 110dB
Remains noise 500 microvolts
Dumping factor 30 (8ohms)
Input sensitivity/impedance 500mV / 47kohm
Load impedance 6ohm-16ohm
Power source AC100V, 50Hz/60Hz
Power consumption 98W
Dimensions Width 430x height 76x depth of 280mm
Weight 6.5kg