YAMAHA A-S801BL Natural Sound Integrated Review: Specs, Pros and Cons

What stands out

• 100 W per channel output at 0.019% THD
• USB DAC support for DSD and 384 kHz PCM
• Gold-plated phono input for turntables
• Digital coax and TOSLINK optical inputs
• 10 Hz to 100 kHz frequency response

Who it fits

Key specs explained

Power Output: 100 W plus 100 W

This rating indicates the amplifier provides 100 watts per channel. It ensures sufficient drive for most bookshelf and floorstanding speakers. You can expect clear sound at moderate listening levels. Compare this to lower wattage units if you plan to use efficient speakers. Higher power headroom helps maintain control during dynamic musical passages without strain.

Total Harmonic Distortion: 0.019% THD

This figure measures signal purity at the stated power level. A low percentage means the amplifier adds minimal coloration to your audio. You get a faithful reproduction of the original recording. When shopping, compare this against higher distortion rates that can introduce audible harshness. This spec helps you choose an amp for critical listening.

Audio Inputs: USB, Digital Coax, TOSLINK, Phono

These inputs allow connection to various sources like turntables and digital players. The phono stage lets you connect a vinyl deck directly. Digital inputs support high-resolution file playback via USB. You benefit from versatile connectivity without needing external preamps. Compare these options to ensure compatibility with your existing turntable or computer setup.

USB DAC function: DSD 5.6 MHz, PCM 384 kHz

This feature lets the amp act as a high-resolution digital-to-analog converter. You can play DSD and high-sample-rate PCM files directly from your computer. It ensures detailed sound from digital sources. Compare this to amps with lower resolution support if you archive music in high-fidelity formats. This spec is key for digital audio enthusiasts.

Design and build quality

The Yamaha A-S801BL is finished in black according to the listing. This color choice helps the amplifier blend into most home theater or stereo setups without drawing excessive visual attention. The unit measures 17.1 inches in width, 6 inches in height, and 15.3 inches in length. These dimensions suggest it fits comfortably on standard shelves or racks, though you should verify your available space before purchase.

Weighing 26.7 pounds, the amplifier has a substantial presence. This weight often correlates with the internal components listed, such as the custom-made power transformer and 12,000 µF block capacitors. The extruded aluminum heat sinks are designed to dissipate heat efficiently during operation. This construction supports the 100-watt-per-channel output while maintaining stable performance under load. The robust build suggests durability for long-term daily use.

The front panel likely houses the necessary controls, though specific button layouts are not detailed in the provided specifications. The rear panel includes gold-plated digital coax and TOSLINK optical inputs, along with gold-plated analog inputs including a phono stage. These connection options allow you to link various sources, from turntables to digital music players. The speaker outputs support configurations for Speakers A, B, or A plus B, giving you flexibility in how you arrange your listening environment. The design prioritizes functional connectivity and thermal management over minimalist aesthetics.

Setup and everyday use

Setting up the Yamaha A-S801BL begins with placing the unit on a stable surface. The amplifier weighs 26.7 pounds and measures 17.1 inches wide, 6 inches high, and 15.3 inches deep. These dimensions fit standard shelf or rack spaces. You connect speakers to the binding posts for outputs A, B, or both simultaneously. The custom power transformer and 12,000 µF block capacitors support stable power delivery during setup.

Connecting sources is straightforward thanks to the gold-plated analog inputs. You can link turntables using the dedicated phono input, which handles moving magnet cartridges. Digital sources connect via the TOSLINK optical or gold-plated digital coaxial inputs. For high-resolution audio, the USB DAC function accepts DSD files at 2.8 MHz and 5.6 MHz. It also supports PCM up to 384 kHz and 32-bit resolution, along with WAV and FLAC formats. This allows you to stream digital audio directly from a computer without external conversion.

Daily use involves switching between input sources. The frequency response of 10 Hz to 100 kHz plus or minus 1.0 dB ensures accurate reproduction across the audible spectrum. The extruded aluminum heat sinks manage thermal output during extended listening sessions. You can toggle between speaker sets A and B for multi-room setups. The 100 watts per channel at 0.019% THD provides clean power for most bookshelf and floorstanding speakers. The black finish remains consistent with the design, keeping the unit visually unobtrusive in your stereo rack.

Check Compatibility Before Buying

Before purchasing the Yamaha A-S801BL, verify your speaker compatibility. This integrated amplifier delivers 100 watts per channel into standard impedances. Ensure your speakers can handle this power without distortion. Check your existing source components. The unit includes a USB DAC function supporting high-resolution PCM and DSD files. If you use digital sources, confirm your computer or streamer outputs compatible signals via USB or optical coaxial connections. Vinyl enthusiasts should note the built-in phono stage. It allows direct connection to turntables without an external preamp. Consider your listening room size. The 100-watt output suits medium to large spaces. Smaller rooms may require lower volume levels. Maintenance is minimal. Keep ventilation clear. The extruded aluminum heat sinks manage heat effectively. Avoid blocking airflow. This amp fits well in systems prioritizing analog warmth and digital clarity. It complements high-fidelity setups by offering versatile inputs and clean power delivery for various speaker types.

Check before you buy

• Verify speaker impedance matches amplifier output capabilities
• Confirm digital source supports USB DAC or optical input
• Ensure turntable has moving magnet cartridge for phono stage
• Check available ventilation space for heat dissipation

The product at a glance

1

Yamaha A-S801 Natural Sound Stereo Amp

Best for: High-fidelity wired audio and turntable use

Power Output

100 W plus 100 W

Audio Inputs

USB, digital coax, TOSLINK, Phono

Audio Outputs

Speakers A, B, AplusB

Total Harmonic Distortion

0.019% THD

Color

Black

Dimensions

15.3 × 17.1 × 6 inches

View on Amazon: Yamaha A-S801 Natural Sound Stereo Amp Affiliate link

The Yamaha A-S801BL is a black integrated stereo amplifier delivering 100 watts per channel. It features a USB DAC supporting DSD and high-resolution PCM, along with gold-plated digital and analog inputs including a phono stage. With a frequency response of 10 Hz to 100 kHz, this unit suits listeners seeking high-fidelity playback and versatile connectivity for various source components.

Pros

• 100 W per channel output
• USB DAC supports DSD and 384 kHz PCM
• Includes phono input for turntables
• Gold-plated digital coax and optical inputs

Cons

• No Bluetooth connectivity listed
• No remote control included
• No app-based control available

Good fit if

• You need a dedicated phono input for a turntable
• You want high-resolution digital audio via USB
• You prefer wired connections over wireless streaming

Skip if

• You require built-in wireless streaming capabilities
• You need a remote control for convenience
• You want to control the amp via a smartphone app

Verdict: Yamaha A-S801BL Natural Sound Integrated Amplifier fits listeners who prioritize high-resolution wired audio and turntable connectivity. It is a solid choice for those building a traditional hi-fi system without needing wireless features.

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