Yamaha A-S501 Integrated Amplifier

Yamaha A-S501 Integrated Amplifier

Yamaha A-S501 is an integrated amplifier for a home Hi-Fi system. It accepts analog sources, digital audio from a TV or disc player, and a turntable with an MM cartridge.

The ToP-ART layout uses short, symmetrical signal paths for the left and right channels. The ART base and rigid chassis help control vibration.

Pure Direct bypasses additional circuitry, including tone, Loudness and balance controls. Continuously variable Loudness adjusts the low- and high-frequency balance for listening at lower volumes.

The optical and coaxial inputs accept 2-channel PCM audio. Set a connected TV to stereo PCM output; multichannel digital audio is unsupported.

Main Features

• A/B or A+B selection allows one or both connected speaker pairs to play, subject to the impedance requirements in the manual.
• Phono MM input, headphone jack and an output for an active subwoofer.
• Aluminium front panel, rotary input selector and source indicator LEDs. The remote also controls compatible Yamaha CD players and tuners. Includes 2 AA batteries.
• Bluetooth requires a YBA-11 adapter, sold separately; DC OUT provides power for the adapter.
• Auto Power Standby activates after approximately 8 hours of inactivity.

Technical Specifications

• RMS Output: 2 × 85 W (8 Ω, 20 Hz - 20 kHz, 0.019% THD); 2 × 100 W (6 Ω, 20 Hz - 20 kHz, 0.038% THD)
• Maximum Output: 2 × 120 W (4 Ω, 1 kHz, 0.7% THD); IEC: 2 × 100 W (8 Ω, 1 kHz, 0.019% THD)
• Dynamic Power per Channel: 130/150/185/220 W (8/6/4/2 Ω)
• Speaker Impedance: A or B ≥4 Ω (LOW) or ≥6 Ω (HIGH); A+B, each ≥8 Ω (LOW) or ≥12 Ω (HIGH)
• Frequency Response: 20 Hz - 20 kHz, ±0.5 dB; Pure Direct: 10 Hz - 100 kHz, ±1.0 dB
• THD: ≤0.019% (CD to speakers, 20 Hz - 20 kHz, 45 W, 8 Ω)
• Signal-to-Noise Ratio: CD ≥99 dB (input shorted, 200 mV, Pure Direct); Phono ≥82 dB (5 mV)
• Damping Factor: ≥240 (1 kHz, 8 Ω)
• Audio Inputs / Recording Outputs: 8 / 2; headphone output
• Digital Audio: 2-channel PCM, 16/24-bit, 32/44.1/48/88.2/96/176.4/192 kHz
• Components: custom transformer, 12000 µF capacitors, speaker relays, one-point grounding, aluminium heat sinks
• Power Supply / Consumption: 230 V, 50 Hz; 240 W; standby 0.5 W
• Dimensions (W × H × D): 435 × 151 × 387 mm
• Weight: 10.3 kg

What’s Included

• Yamaha A-S501 integrated amplifier in the selected colour (1 unit)
• Remote control
• AA / R6 / UM-3 batteries (2)

Who Is It For

For a home stereo system with passive speakers, combining vinyl, CD playback and TV audio through one amplifier.

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