Solid State Stereo Control Amplifier (1971-73)
In design, appearance and performance, the amplifier draws heavily on the careful engineering that has made Sansui's larger AU amplifiers, favourites among stereo enthusiasts throughout the world.
The AU-555A is an upgraded model of the AU-555, featuring refined dull black panels and the exclusive triple tone controls.
Power output: 25 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 30kHz
Total harmonic distortion: 0.5%
Damping factor: 50
Input sensitivity: 2mV (MM), 180mV (DIN), 180mV (line)
Signal to noise ratio: 70dB (MM), 80dB (line)
Channel separation: 45dB (MM), 50dB (line)
Output: 180mV (line), 30mV (DIN)
Speaker load impedance: 4Ω to 16Ω
Semiconductors: 23 x transistors, 2 x diodes
Dimensions: 395 x 127 x 278mm
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