Yamaha A-S501 Stereo Amplifier - Refurbished
Yamaha

Yamaha A-S501 Stereo Amplifier - Refurbished

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A stereo integrated amplifier from Yamaha with an MM phono input, optical and coaxial digital inputs, and a ToP-ART circuit design. Yamaha rates it at 85 W + 85 W into 8 ohms (20 Hz-20 kHz, 0.019% THD).

THIS IS A REFURBISHED MODEL. 12 MONTH WARRANTY APPLIES, ITEM MAY NOT COME IN ORIGINAL BOX/PACKAGING

Yamaha describes the A-S501 as an integrated amplifier with impressively high sound quality, a wide range of features and an elegant appearance, with the advantage of digital input. Yamaha calls it an entry model that still aims for musically rich sound.

Power, 8Ω
85 W + 85 W (RMS)
Phono
MM input
Digital inputs
Optical and coaxial
Speakers
A, B or A+B
Subwoofer
Output provided
Weight
10.3 kg

Why you will love it

ToP-ART circuit design

Yamaha's ToP-ART (Total Purity Audio Reproduction Technology) design uses an input-to-output direct symmetrical layout, with the left and right channels laid out in a straight, symmetrical line. Yamaha says this keeps the signal path simple and direct, so it is less likely to be affected by noise and distortion.

The ART (Anti-Resonance and Tough) Base chassis and a solid centre bar give high-rigidity support and damp vibration, says Yamaha.

Internal view of the Yamaha A-S501 showing the ToP-ART symmetrical layout

Custom parts

Yamaha lists a custom-made power transformer, custom-made block capacitors, two direct signal path speaker relays, a one-point grounding system and aluminium-extruded heat sinks.

Gold-plated speaker terminals and gold-plated RCA (CD, phono) and coaxial terminals are fitted.

Rear panel of the Yamaha A-S501 with speaker terminals, line inputs, phono input and digital inputs

Pure Direct and variable loudness

Pure Direct mode sends the signal by the shortest circuit route, bypassing the buffer amp and the tone, loudness and balance controls, says Yamaha.

A continuously variable analogue loudness control on the front panel lets you set the loudness effect as you like. Yamaha says it compensates for the ear's loss of low and high frequencies at low volumes.

Front panel of the Yamaha A-S501 stereo amplifier in black with its remote

Digital, phono and two speaker pairs

Optical and coaxial digital inputs let you connect a TV (optical) and a Blu-ray player (coaxial) and keep the signal digital. An MM phono input takes a turntable with a moving magnet cartridge.

A speaker selector switches between speaker pair A, B or both, with four speaker terminals so two systems can be connected. A subwoofer output is provided.

Bluetooth by adapter, and simple controls

The A-S501 has a DC out connection for Yamaha's optional YBA-11 Bluetooth wireless adapter, which Yamaha says supports aptX audio coding. Bluetooth is not built in.

A rotary input selector with LEDs shows the selected source. Auto Power Standby shifts the amplifier into standby after about eight hours without use, per Yamaha. The remote can also control a Yamaha CD player.

Is it right for you?

A great fit if you…

  • Want a simple two-channel amplifier for passive speakers
  • Have a turntable with an MM cartridge
  • Want to connect a TV or Blu-ray player by optical or coaxial digital
  • Want to run two pairs of speakers or add a subwoofer

Worth knowing

  • No built-in Bluetooth or network streaming: Bluetooth needs Yamaha's optional YBA-11 adapter, sold separately
  • The phono input is MM only, so it suits turntables with a moving magnet cartridge
  • It is 387 mm deep, so check your shelf
  • The 120 W + 120 W maximum power figure is quoted at 4 ohms, 1 kHz, 0.7% THD, for Europe

Build your system

The A-S501 needs passive speakers. It has phono, line and digital inputs.

Specifications

Amplifier

Minimum RMS output power 85 W + 85 W (8Ω, 20 Hz-20 kHz, 0.019% THD)
Maximum power 120 W + 120 W (4Ω, 1 kHz, 0.7% THD, for Europe)
High dynamic power / channel 130 / 150 / 185 / 220 W (8 / 6 / 4 / 2Ω)
Damping factor 240
Frequency response 10 Hz-100 kHz, +/-1.0 dB
THD (CD to speaker out, 20 Hz-20 kHz) 0.019% (50 W / 8Ω)
Signal-to-noise ratio (CD) 99 dB (input shorted, 200 mV)

Connections and features

Digital input Optical and coaxial
Subwoofer out Yes
DC out Yes
Pure Direct Yes
ToP-ART Yes
Standby power consumption 0.5 W
Auto Power Standby Yes

General

Dimensions (W × H × D) 435 × 151 × 387 mm
Weight 10.3 kg

Specifications from Yamaha Australia's A-S501 specification page, checked November 2026.

Questions people ask

Can I connect a turntable?

Yes, if it has an MM (moving magnet) cartridge. Yamaha lists an MM phono input.

Does it have Bluetooth?

Not built in. Yamaha offers the optional YBA-11 Bluetooth wireless adapter, which connects to the amplifier and is powered from its DC out.

Can I connect my TV?

Yes. Yamaha says the optical input is for a TV and the coaxial input for a Blu-ray player.

How much power does it have?

85 W + 85 W into 8 ohms (20 Hz-20 kHz, 0.019% THD), from Yamaha's specification.

Can it run two pairs of speakers?

Yes. Yamaha lists speaker A, B or A+B selection, with terminals for two systems.

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