Yamaha A-S801 Integrated Amplifier User Manual

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Yamaha A-S801 Integrated Amplifier Manual

Introduction to the Yamaha A-S801 Integrated Amplifier

The Yamaha A-S801 Integrated Amplifier is a two-channel hi-fi amplifier designed for listeners who want powerful stereo performance with flexible digital and analog connectivity. It combines a high-current power section with Yamaha technologies such as ToP-ART construction, Pure Direct mode, and switchable CD Direct Amplification to support detailed, low-noise music playback.

With 100 watts per channel into 8-ohm speakers, the A-S801 can drive many bookshelf, floor-standing, and traditional passive speaker systems. Its optical and coaxial digital inputs make it suitable for televisions, CD players, streamers, and other digital sources, while the USB Type-B input allows connection to a computer for high-quality desktop or living-room audio. A phono input supports a turntable with a moving-magnet cartridge.

This stereo integrated amplifier suits music enthusiasts, home audio users, and listeners upgrading from a compact receiver or powered speakers. It can serve as the central component of a two-channel hi-fi system, a television audio system, or a computer-based listening setup. A subwoofer output provides an option for adding low-frequency reinforcement, while Pure Direct bypasses selected tone-control circuitry for a more direct signal path.

The Yamaha A-S801 Integrated Amplifier also includes a remote control, speaker A/B selection, bass and treble controls, balance adjustment, and automatic standby functionality. Its combination of substantial power, digital audio support, and straightforward controls makes it a versatile choice for serious stereo listening.

Yamaha A-S801 Specifications and Features

Amplifier type: Two-channel integrated stereo amplifier.
Rated output power: 100 watts plus 100 watts into 8 ohms from 20 Hz to 20 kHz with 0.019% total harmonic distortion.
Dynamic power per channel: 140 watts at 8 ohms, 170 watts at 6 ohms, 220 watts at 4 ohms, and 290 watts at 2 ohms.
Damping factor: 240, supporting controlled speaker-driver movement.
Frequency response: 10 Hz to 100 kHz with a tolerance of plus or minus 1.0 dB.
Signal-to-noise ratio: 99 dB for the CD input under the stated measurement conditions.
Inputs: Phono, CD, tuner, line-level analog inputs, optical digital, coaxial digital, and USB Type-B.
Outputs: Speaker outputs, record outputs, subwoofer output, and DC output for compatible equipment.
Listening modes: Pure Direct and switchable CD Direct Amplification.
Construction features: Yamaha ToP-ART design and symmetrical circuit layout.
Power management: Automatic power standby with approximately 0.5-watt standby consumption.
Dimensions: Approximately 17-1/8 inches wide, 6 inches high, and 15-1/4 inches deep.
Weight: Approximately 26.7 pounds.

How to Set Up the Yamaha A-S801

Place the amplifier on a stable, level surface with open space above and around the ventilation openings. Do not install it inside a tightly enclosed cabinet.
Turn the amplifier off and disconnect it from AC power before connecting equipment.
Connect the left and right passive speakers to the corresponding SPEAKERS A terminals. Observe polarity: connect positive to positive and negative to negative.
Connect a turntable to the PHONO input and attach its ground wire to the GND terminal. Use an appropriate moving-magnet cartridge.
Connect analog sources to the matching line inputs. Use the optical or coaxial input for compatible digital equipment.
Connect a computer to the USB Type-B input using a suitable USB cable. Install any operating-system audio driver required by the computer.
Connect an optional powered subwoofer to the SUBWOOFER OUT jack. Follow the subwoofer manufacturer’s instructions for crossover and level settings.
Set the volume to its lowest position, connect the power cord, and turn on the amplifier.
Select the input source, begin playback, and increase the volume gradually.

Use speaker cables without loose strands that could touch neighboring terminals. Keep ventilation clear, avoid moisture, and never connect or disconnect speakers while the amplifier is powered on. If using two speaker pairs, confirm that the combined load is suitable for the selected impedance setting.

Yamaha A-S801 Troubleshooting Guide

No power

Confirm that the power cord is firmly connected and that the front-panel power switch is on. Check the AC outlet with another device. If the amplifier immediately shuts down, disconnect it and seek service rather than repeatedly attempting to power it on.

No sound or incorrect input

Verify that the correct input is selected, the source is playing, and the volume is raised gradually. Check both ends of every interconnect and confirm that speaker cables are connected to the correct terminals. For digital sources, select the matching optical or coaxial input and confirm that the source is outputting a compatible digital signal.

Sound from only one speaker

Inspect left and right connections for loose wires or reversed plugs. Try another input to determine whether the problem is caused by the source. The balance control should be centered. Switch off the amplifier before moving cables.

Protective shutdown or flashing input indicators

Turn the amplifier off and check for shorted speaker wires, incorrect impedance selection, excessive volume, or blocked ventilation. Allow the unit to cool for about 30 minutes, correct the cause, and restart at a lower volume. Persistent shutdowns require an authorized Yamaha dealer or service center.

USB audio problems

Reconnect the USB cable, select the USB input, and check the computer’s output-device settings. Restart the computer if the amplifier is not recognized. For detailed compatibility and driver information, consult the official Yamaha owner’s manual.

Do not open the cabinet or attempt internal repairs. Keep the purchase documentation and serial number available for warranty assistance. For product manuals, service information, and regional support, use Yamaha’s official support website or contact an authorized Yamaha dealer or service center.

Yamaha A-S801 Pros and Cons

Advantages

Strong stereo output: 100 watts per channel provides useful headroom for many home hi-fi systems.
Broad connectivity: Optical, coaxial, USB, phono, and analog inputs cover computers, televisions, turntables, CD players, and streamers.
Subwoofer integration: The dedicated subwoofer output makes it easier to extend bass response in a two-channel system.
Direct listening options: Pure Direct and CD Direct Amplification can reduce unnecessary signal-path processing.
Practical controls: Bass, treble, balance, speaker A/B selection, and remote operation are useful for everyday listening.
Solid construction: ToP-ART design and a substantial chassis are more substantial than what is typical of many entry-level compact amplifiers.

Limitations

No network streaming: The amplifier does not replace a network streamer, Wi-Fi receiver, or music-server interface.
No HDMI audio: Television users may need an optical connection or a separate audio converter rather than HDMI ARC or eARC.
Passive speakers required: It is not intended for direct operation with passive speakers without amplification accessories; powered speakers may require a different product type.
Large footprint: Its depth and weight require a stable shelf with adequate ventilation.
Best suited to stereo listening: Users seeking multichannel home theater, room correction, or integrated streaming may need an AV receiver or network amplifier.

The Yamaha A-S801 Integrated Amplifier is best for listeners who prioritize powerful two-channel sound, physical controls, digital inputs, and turntable support. Those needing wireless streaming, HDMI connectivity, or extensive home-theater features should consider a different category of amplifier.

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Faqs

How do I set up the yamaha A-S801 Integrated Amplifier for the first time?

Place the Yamaha A-S801 Integrated Amplifier on a stable, ventilated surface and keep space around the top and sides for heat dissipation. Connect passive speakers to the correct A or B terminals, matching the left and right channels and observing polarity. Connect your source components to the appropriate analog, optical, coaxial, or USB input, then attach the power cable. Select the matching input before starting playback and increase the volume gradually.

Can I connect a TV to the yamaha A-S801 Integrated Amplifier using an optical cable?

Yes. Connect the TV’s optical audio output to the Yamaha A-S801 Integrated Amplifier optical input, then select that input with the remote or front-panel control. Set the television’s digital audio output to PCM if the amplifier does not receive sound from an incompatible surround format. Disable the TV’s internal speakers if necessary, and adjust volume through the amplifier for consistent playback.

How do I use the yamaha A-S801 Integrated Amplifier as a USB DAC with a computer?

Connect the computer to the Yamaha A-S801 Integrated Amplifier USB Type-B input with a suitable USB cable, select USB on the amplifier, and choose the amplifier as the computer’s audio output device. Windows computers may require Yamaha Steinberg USB driver software for full compatibility and high-resolution playback. Keep the computer volume near maximum and use the amplifier’s volume control for listening-level adjustments.

What should I do if the yamaha A-S801 Integrated Amplifier has no sound?

Confirm that the amplifier is powered on, the correct input is selected, and the source component is playing. Check both ends of every cable and ensure speaker wires are firmly connected without stray strands touching adjacent terminals. Verify that the speaker selector is set to the terminals being used and that mute is disabled. Test another input or source to identify whether the problem is the amplifier, cable, or playback device.

Why does the yamaha A-S801 Integrated Amplifier shut down or enter protection mode?

Protection activation commonly indicates excessive heat, a shorted speaker cable, an incorrect speaker connection, or an unsuitable load. Turn off the Yamaha A-S801 Integrated Amplifier, disconnect the power cable, and allow it to cool. Inspect speaker wiring for loose strands and confirm that left and right terminals are not touching. Improve ventilation before restarting. If protection returns with all speaker cables removed, discontinue use and arrange qualified service.

Which speakers and source devices are compatible with the yamaha A-S801 Integrated Amplifier?

The Yamaha A-S801 Integrated Amplifier is designed for passive speakers connected through its speaker terminals; it is not intended to drive passive speakers through a headphone or line-level output. Compatible sources include turntables with a suitable phono connection, CD players, network players, televisions, Blu-ray players, and computers. Use optical or coaxial digital inputs for supported digital sources, and confirm the speaker impedance and wiring requirements in the owner’s manual.

How can I improve sound quality when using the yamaha A-S801 Integrated Amplifier?

Use short, secure speaker cables with consistent polarity, position the speakers symmetrically, and keep them away from corners when possible. Select the direct or pure signal option when you want fewer tone-control changes, while using bass, treble, and loudness controls to suit your room and listening level. For computer audio, select an appropriate output format and prevent other applications from changing the active playback device.

How should I clean and maintain the yamaha A-S801 Integrated Amplifier?

Switch off and unplug the Yamaha A-S801 Integrated Amplifier before cleaning. Wipe the cabinet and controls with a soft, dry cloth; for stubborn marks, use a lightly dampened cloth and immediately dry the surface. Do not spray liquid into vents, switches, or connectors. Keep ventilation openings clear of dust, avoid stacking heat-producing equipment directly on top, and periodically inspect speaker and input cables for looseness or damage.