Yamaha A-1 Stereo Amplifier Owner's Manual

About this manual

The Yamaha A-1 is a high-performance integrated stereo amplifier featuring a TRUE DC amplifier design and a unique DISC switch. This switch allows direct transmission of signals from a record player to the power amplifier, bypassing the equalizer and tone controls for superior sound quality. The unit includes high-performance MC and MM amplifier elements and is designed with careful attention to circuit configuration and part selection.

What's inside

• Caution: Read This Before Operating
• Connection Diagram
• The Names and Functions of the Parts
• Connecting and Operating the A-1
• Disc Switch and Cartridge Load
• Tone Switch
• Circuit Explanation
• Specifications
• Trouble Shooting

Frequently asked questions

What happens when the POWER switch is turned on?

The speaker does not sound for a few seconds after the switch is turned ON because a speaker-protection circuit functions to eliminate popping noises.

What happens to the sound when the POWER switch is turned ON?

The speaker does not sound for a few seconds because a speaker-protection circuit functions to eliminate popping noises.

What is the maximum power rating for the switched AC outlet sockets?

They are suitable for tuners and other low power units requiring up to 100 watts.

What is the capacity of the built-in electrolytic capacitor?

The amplifier uses an electrolytic capacitor with a large capacity of 18,000uF.