Audio Database

SE-A808
Commentary

A simple stereo power amplifier consisting of two ICs and one transistor.

The input stage IC is a differential amplifier with a current mirror load capable of selecting an operating current with a low distortion factor, and realizes a low distortion factor while maintaining a high gain.
Power ICs of the complimentary service stage are composed of pure output circuit of two stage Darlington connection.

Equipped with a relay type protection circuit that protects the output stage IC even if the speaker terminal is short-circuited.

Uses a low-distortion 2-power transformer power supply circuit with reversed winding and canceled flux.

Model Rating
Type Stereo power amplifier
Rated output (when both channels are driven) 45W + 45W (8 ohm, 20 hz to 20 khz)
50W + 50W (8 ω, 1 kHz)
Total harmonic distortion factor 0.02% (20 Hz ~ 20 kHz, Rated Output)
Output bandwidth 5 hz to 50 khz -3dB
Frequency characteristic 5 Hz ~ 100 kHz + 0 -3dB
Signal-to-noise ratio 110dB
Residual noise 500 μ V
Damping factor 30 (8 Ω)
Input Sensitivity / Impedance 500mV/47k Ω
Load impedance 6 Ω ~ 16 Ω
Pwer 100 VAC, 50Hz/60Hz
Power consumption 98W
External dimensions Width 430x Height 76x Depth 280 mm
Weight 6.5kg