Yamaha A-S501 Integrated Amplifier (Black)

BH #YAAS501BL • MFR #A-S501BL
Yamaha A-S501 Integrated Amplifier (Black)
Key Features
  • 100W x 2 (6 Ohm RMS) Power Output
  • Optical and Coaxial Inputs
  • Speaker A, B or A+B Selection
  • Subwoofer Out
Expand your listening horizons with the black A-S501 Integrated Amplifier from Yamaha. Featuring up to 100W per channel of RMS power at 6 ohms, this amp is equipped with digital inputs for connecting devices like televisions and Blu-ray/DVD players. It offers dual stereo outputs, giving you the ability to power two sets of speakers in different rooms and switch between them, or have them both playing at the same time. To increase the bass output of your sound system, there's also a terminal for connecting a subwoofer.
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Yamaha A-S501 Overview

  • 1Description
  • 2Pure Direct Mode
  • 3Continuously Variable Loudness Control
  • 4Direct Symmetrical Design
  • 5Anti-Resonance Chassis
  • 6Dual System Capable
  • 7Phono MM Terminal
  • 8Auto Power Standby Function
  • 9Remote Control
  • 10Connection for Bluetooth Wireless Adapter
  • 11Rotary Encoder Input Selector

Expand your listening horizons with the black A-S501 Integrated Amplifier from Yamaha. Featuring up to 100W per channel of RMS power at 6 ohms, this amp is equipped with digital inputs for connecting devices like televisions and Blu-ray/DVD players. It offers dual stereo outputs, giving you the ability to power two sets of speakers in different rooms and switch between them, or have them both playing at the same time. To increase the bass output of your sound system, there's also a terminal for connecting a subwoofer.

To reduce distortion and degradation and produce the cleanest possible sound, the A-S501 employs Pure Direct Mode. Activated via a button on the front of the unit, this mode causes input signals to bypass unused circuits and cuts off those circuits' power supply. To further ensure quality sound, the amplifier's continuously variable loudness control allows you to balance low and high frequency sounds so you can hear a full tonal range at any volume.

This Yamaha amplifier was built with energy efficiency in mind, and uses a power management system to switch itself to idle mode when not in use. The A-S501's internal circuitry mirrors itself symmetrically to produce higher signal purity and lower degradation. The chassis is reinforced with a solid center bar to reduce vibration and features a brushed aluminum front panel and knobs. The system comes with a remote control for easy operation.

Pure Direct Mode
The Pure Direct mode causes the music signals to travel the shortest possible circuit route, bypassing the buffer amp and the tone, loudness and balance controls to virtually eliminate any signal degradation for the purest sound quality.
Continuously Variable Loudness Control
The A-S501 features an analog loudness control on the front panel, which lets you adjust the loudness effect as desired. Separate from the overall volume, this controls the balance of the low- and high-frequency sounds, providing full tonal range at any volume level, compensating for the natural loss in the human ear of high and low frequencies at soft levels.
Direct Symmetrical Design
This amplifier's left and right channels are organized in a straight, symmetrical layout for limiting distortion and increasing signal purity.
Anti-Resonance Chassis
The base of the A-S501's chassis is reinforced with a solid center bar to increase rigidity support and vibration damping, which limits resonance.
Dual System Capable
You can connect two separate speaker systems in different rooms and switch between them or have them both play at the same time by switching the dial on the front of the unit.
Phono MM Terminal
You can connect a turntable with an MM phono cartridge to play vinyl records, allowing you to enjoy records in addition to modern media sources.
Auto Power Standby Function
This amplifier puts itself into standby mode when it detects that it hasn't been used in approximately 8 hours, minimizing power consumption.
Remote Control
Control your music from afar with the included remote, finished to match the design of the amplifier. The remote comes with batteries and can also be used to control a Yamaha CD player.
Connection for Bluetooth Wireless Adapter
With the optional YBA-11 Bluetooth Wireless Adapter, you'll be able to stream music wirelessly from a Bluetooth capable mobile phone or a PC to the network receiver. This amplifier features a DC-out connection on the rear panel to power the adapter.
Rotary Encoder Input Selector
The rotary encoder makes it quick and easy to select input sources, and the LEDs clearly show which source is selected so you can easily switch between them, even in a dark room.
UPC: 027108948744

Yamaha A-S501 Specs

Key Specs
Channels
2.0
Power Output per Channel
100 W at 6 Ohms / 20 Hz to 20 kHz / 0.038% THD (RMS)
85 W at 8 Ohms / 20 Hz to 20 kHz / 0.019% THD (RMS)
Rear A/V Outputs
2x Stereo RCA
1x RCA Subwoofer
Speaker I/O
4x Binding Post Pair
4x Binding Post Pair
Wi-Fi
No
Bluetooth
No
Amplifier
Amplifier Type
Integrated Amplifier (Preamp/Power Amp Combo)
Channels
2.0
Power Output per Channel
100 W at 6 Ohms / 20 Hz to 20 kHz / 0.038% THD (RMS)
85 W at 8 Ohms / 20 Hz to 20 kHz / 0.019% THD (RMS)
Dynamic Power per Channel
130 W at 8 Ohms
150 W at 6 Ohms
185 W at 4 Ohms
220 W at 2 Ohms
Frequency Response
20 Hz to 20 kHz ±0.5 dB (Pure Direct Mode)
10 Hz to 100 kHz ±1 dB
Residual Output Noise
40 µV (IHF-A)
Tone Control
Bass (20 Hz): ±10.0 dB
Treble (20 kHz): ±10.0 dB
Damping Factor
≥ 240 (8 Ohms, 1 kHz)
Audio Processing
Supported File Formats
PCM
Supported Sample Rates
Up to 192 kHz (PCM)
DAC
192 kHz / 24-Bit
Connectivity
Rear A/V Inputs
5x Stereo RCA
1x Stereo RCA (Phono) with Ground Screw
1x Optical TOSLINK
1x Digital Coaxial
Rear A/V Outputs
2x Stereo RCA
1x RCA Subwoofer
Front I/O
1x 1/4" / 6.35 mm Headphone Output
Other Rear I/O
1x USB-A (Power)
Speaker I/O
4x Binding Post Pair
4x Binding Post Pair
Input Impedance
Phono (MM): 47 Kilohms
Line: 47 Kilohms
Input Sensitivity
Phono (MM): 3 mV
Line: 200 mV
Max Input Level
Phono (MM): ≥ 45 mV (1 kHz / 0.03% THD)
Line: ≥ 2.2 V (1 kHz / 0.03% THD)
Phono RIAA EQ Deviation
±0.5 dB
Rated Output / Impedance
Headphone: 430 mV / 470 Ohms
Line: 200 mV / 1 Kilohms
Subwoofer: 3.5 V / 1.2 Kilohms
Signal to Noise Ratio
Phono (MM): ≥ 82 dB (Input Shorted)
Line: ≥ 99 dB (Input Shorted / Direct Mode)
Total Harmonic Distortion (THD)
Phono (MM) to Line Out: ≤ 0.03% (20 Hz to 20 kHz / 2.5 V Input)
Line to Speaker Out: ≤ 0.019% (20 Hz to 20 kHz / 45 W Output / 8 Ohms)
Channel Separation
Line, Phono, RCA:
≥ 65 dB (5.1-Kilohm Input Shorted / 1 kHz)
≥ 50 dB (5.1-Kilohm Input Shorted / 10 kHz)
Wireless Connectivity
Wi-Fi
No
Bluetooth
No
Power
AC Input Power
120 VAC, 60 Hz
Power Consumption
Active: 240 W
Maximum: 510 W
Standby: 0.5 W
Physical
Dimensions (W x H x D)
17.1 x 5.9 x 15.2" / 43.5 x 15.1 x 38.7 cm
Weight
22.7 lb / 10.3 kg
Packaging Info
Package Weight
26 lb
Box Dimensions (LxWxH)
21 x 8.5 x 7.5"

Yamaha A-S501 Reviews

See any errors on this page? Let us know

Does the subwoofer output function with both ...

Does the subwoofer output function with both speaker sets?
Asked by: John
Yes the subwoofer output on the Yamaha A-S301 functions with both speaker sets.
Answered by: David M
Date published: 2022-02-11

Can you add an equalizer? Does it have a tape ...

Can you add an equalizer? Does it have a tape monitor function?
Asked by: John
There is a channel on this integrated amplifier with a record out, so you could connect an equilizer into this system. Oherwise you would have to connect the equilizer between one component, such a CD player, and the amplifier.
Answered by: Steve
Date published: 2021-08-27

I want to connect four 8 ohm speakers to the ...

I want to connect four 8 ohm speakers to the S-501 and listen to them at the sametime.Am I correct in setting the impedence switch to high? Thanks.
Asked by: joseph
No. Set the impedance switch to low. Note the instructions on the back panel.
Answered by: Mark S
Date published: 2019-02-28

I want to connect four 6 ohm speakers to the ...

I want to connect four 6 ohm speakers to the yamaha a s501 amp and use at the same time.Do I set impedence switch on back of amp to high or low ?
Asked by: joseph
Set to low.
Answered by: Mark S
Date published: 2019-10-03

Does this unit mix down the 2-channel stereo ...

Does this unit mix down the 2-channel stereo source to all 4 speakers,also thanks for past audio system advice.?
Asked by: joseph
Yes it will send stereo to all 4 speakers. Speaker pair A and speaker pair B.
Answered by: Mark S
Date published: 2020-12-31

I have a set of 8 ohm speakers and a set of 6 ohm ...

I have a set of 8 ohm speakers and a set of 6 ohm speakers I want to use at the same time.Do I set the impedence selecter to low or high? Thanks,Joe.
Asked by: joseph
Set the impedance switch to "LOW"
Answered by: Mark S
Date published: 2019-02-28

Will this amp play all cds in multi-channel ...

Will this amp play all cds in multi-channel stereo.I notice it does not decode like 5.1 receivers.I am looking to upgrade my sound system.Will it sound better then the sony STR-1080 set to (multi channel stereo) with decent speakers?I dont have much experience with sound systems.THANKS,JOE.
Asked by: joseph
This is a stereo amplifier (2 channel only) So with two speakers connected it will sound the same or slightly better than the SONY with just two speakers connected. it will not offer you any simulated surround effect as the SONY might.
Answered by: Mark S
Date published: 2019-10-03

question

I have a set of 4ohm speakers and a set of 8 ohm speakers I want to listen to at the same time. Do I connect the 4 ohms to the B speaker terminals and the 8 ohm speakers connected to the A side? The info box on page 5 seems to suggest that. And then set the Impedence selector to LOW ?Thanks!Dick
Asked by: Dick G.
You can use whichever speakers you choose, in either the A or B location. Yes. If one pair, either A or B is 4 ohms, you do select Low.
Answered by: Steve M.
Date published: 2018-08-25
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