Rare and superb outlet vintage OPTONICA SM-5100 hifi amplifier 1980

Rare and superb vintage OPTONICA SM-5100 hifi amplifier 1980
Almost outlet new condition
Optonica was Sharp's premium brand
Very musical and detailed sound, very high quality integrated amplifier
Outputs for 2 pairs of loudspeakers
Possibility to connect a separate preamp
Power 2 x 45 w under 8 ohms
High and low pass filters, mute, loudness, tape monitor and phono
90 db signal-to-sound ratio
Frequency 10 - 65000 Hz