hifi engine

Manual Library / Yamaha

Yamaha A-1

Integrated Stereo Amplifier (1978-81)

add a review (1 review)

Yamaha A-1


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

Weight: 15.8kg

Year: 1978


Related Catalogues


Natural Sound

Natural Sound System

If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

If you have additional documentation please consider donating a copy to our free archive.


 Login or register to post reviews

Reviewed Feb 13th, 2019 by

Super Quality and powerful sound Yamaha A1 + Quadral Montan mk3 + Shanling M3s



This website is not affiliated with or sponsored by Yamaha. To purchase A-1 spares or accessories, please contact the company via their website or visit an authorised retailer.