Integrated Stereo Amplifier (1978-80)
The exciting A-1 amplifier is a great tribute to the Yamaha engineers who are unique in that they combine the most modern electronics sound reproduction know-how with the wisdom acquired over many years experience in musical equipment manufacture.
The A1 embodies versatile functions, a sophisticated circuit configuration and carefully selected parts.
The disc switch arrangement, particularly, allows signals from the equalizer amplifier to reach the power amplifier in a direct manner, to achieve a new high quality in fine and delicate musical signals from disc grooves.
Here, the A-1 justifiably claims to be a true DC amplifier.
Power output: 80 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.01%
Damping factor: 100
Input sensitivity: 0.6mV (MC), 2.5mV (MM), 200mV (line)
Signal to noise ratio: 70dB (MC), 85dB (MM), 112dB (line)
Channel separation: 75dB (MM), 75dB (MC), 70dB (line)
Output: 200mV (line), 2V (Pre out)
Dimensions: 435 x 117 x 381mm
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