hifi engine

Manual Library / Yamaha

Yamaha A-420

Stereo Integrated Amplifier (1985-86)

add a review add a review

Yamaha A-420


Power output: 50 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.015%

Input sensitivity: 0.16mV (MC), 2.5mV (MM)

Signal to noise ratio: 74dB (MC), 90dB (MM)

Dimensions: 435 x 112 x 327mm

Weight: 6.2kg

Year: 1985


schematic (partial)  English - komusics

Related Catalogues


Natural Sound Audio Components

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.


This website is not affiliated with or sponsored by Yamaha. To purchase A-420 spares or accessories, please contact the company via their website or visit an authorised retailer.