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Yamaha A-S1100 (Black)


Stereo Integrated Amplifier

Yamaha A-S1100 Stereo Integrated Amplifier

Yamaha A-S1100 Stereo Integrated Amplifier

90 Watts Continuous Power Output Per Channel. Large Capacity Power Supply And Low Impedance Design Ensures Powerful Bass Response

Symmetrical Design In Pursuit Of Perfect Stereo Reproduction

Large Front-Panel Level/VU Meters, Remote Control

Stylish Retro Design With Black Finish & Gloss Black Side Panels

Colour Selected: Black
Availability: In Stock
Delivery: Free Australia Wide Delivery

Your price $2,495

Save $104 (Normally $2,599)

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Product Description

Dedicated single-ended high-grade integrated amplifier design that faithfully draws out all the intrinsic value of your favourite player or D/A converter.


The Yamaha A-S1100 is a dynamic, high current stereo amplifier with low impedance drive capability and perfect for those wanting to listen to quality 2 Channel audio from a multitude of sources, including vinyl. It is a dedicated single-ended stereo amplifier featuring unbalanced circuitry from the input to the control amplifier block. It employs the balanced amplification method based on our original Floating and Balanced Power amplifier technology and incorporates MOSFETs for the output elements. This masterfully crafted amplifier includes a discretely configured phono-equaliser and high-precision electronic volume control made by New Japan Radio Co, Ltd., and has inherited many superior and trickle-down features from the more expensive A-S2100 such as the volume/tone circuit that minimises sound quality deterioration.

It also has as a beautifully simple exterior design equipped with a peak/VU switching type level meter just as Yamaha had back in the 1970s/80s. This a wonderful, new choice in luxury integrated amplifier that brings you closer to the Emotional & Dynamic sound that’s possible only with Yamaha’s patented technology, the Floating and Balanced method. Power output is rated at a continuous, full-bandwith 95 Watts per channel with very low distortion specs.

Floating And Balanced Power Amplifier With MOSFETs: The basic design of the power amplifier circuit adopts Yamaha’s own, uniquely developed Floating and Balanced Power Amplifier technology. Adopting output elements with the same polarity on the plus and minus sides of the output stage, and also completely separating the NFB (Negative Feedback) circuit and power supply into total of four plus and minus sides of the left and right channels, results in thoroughly symmetric push-pull operation of the output stage, Completely floating the entire power amplifier circuit from the ground removes any negative impact of minute voltage fluctuations or ground noise. Moreover, the output elements are comprised of MOSFETs, which provide a warm and natural sonic character. The use of MOSFETs, which have the same polarity on the plus and minus sides, further evolves the ideal of a complete symmetrical design, to eliminate sound quality variations due to difference in polarity—a major distinguishing characteristic of the Floating and Balanced Power Amplifier—resulting in sound with a superior signal-tonoise ratio and superbly well-defined sound field.

Dedicated Single-Ended Amplifier For All Types Of Audio Sources: Since this device employs a dedicated singleended amplifier, it provides excellent response in amplification of single-ended analogue sound from all kinds of audio sources, such as CD players of D/A converters—and the A-S1100 takes advantage of this in having been carefully fine-tuned for optimum sound quality. By fully utilising single-ended amplification, the A-S1100 transparently draws out the intrinsic qualities of your favourite audio devices, including those made by other manufacturers.

All-Stage Full Discrete Configuration For Strong Reproduction Of High Notes: This amplifier adopts an all-stage fully discrete configuration through all sound circuit stages, using only the most meticulously selected high-precision parts from input to output. (Applicable during tone control circuit defeat.) The slew-rate of the audio signal has been improved to bring lively and strong response to high musical notes. Moreover, the tone control circuit lets you switch to defeat state and enable a full discrete configuration that bypasses the op-amp IC of the internal circuit, simply by setting the BASS/TREBLE knobs to their center points.

Low Impedance Design Ensures Powerful Bass Response: By strengthening the capacity of the high current route (raising the section area of the cable core wire to about 60% of that of the A-S1000) and by pursuing thorough low impedance design, including forming screwclamped wire connections of major ground points, the A-S1100 boasts excellent speaker drive power with a damping factor of more than 250 (8Ω, 1kHz). Along with the large-capacity power source transformer equipped with an EI core, this design delivers bass reproduction that is both strong and uplifting.

Our Take

The current range of Yamaha integrated amplifiers are designed as descendants of the famous A-S2000 with Yamaha’s strong commitment to quality craftsmanship being just some of the benefits. Further more, it is clear that they are taking advantage of the desire for a return to 1970s designs which were really, really good both in industrial design and performance. The Yamaha A-S1100 Stereo Amp has definitely been designed with the music listener in mind. However, the sound is just one part of the puzzle so-to-speak. You will find the traditional knobs - but in a retro kind of style - to control volume, bass, treble and balance. The brushed aluminium retro styling ensures they will match Yamaha’s CD/Blu-ray players for a system that looks as good as it sounds. Weighing an impressive 23.3kg, the A-S1100 has plenty of the necessaries to power a wide-range of speakers. 

  • Design: Stereo Integrated Amplifier with built-in DAC
  • Power Output: 2 x 95 Watts into 8 Ohms (20-20kHz) at 0.02% THD;
    • 2 x 110 Watts into 6 Ohms (20-20kHz) at 0.07% THD
    • 2 x 160 Watts into 4 Ohms (1kHz) at 0.7%
  • Low Impedance Drive: 4 Ohm capability allows use with a wider range of speakers
  • Power Transformer: Large-capacity power transformer delivers clean, stable current
  • Frequency Response: 10 Hz-100 kHz +/-1.0 dB
  • Total Harmonic Distortion: 0.019% 
  • Signal-to-Noise Ratio: 100dB (CD)
  • Bass & Treble Controls: Yes
  • VU Meters: Large illuminated level meters (VU or peak) for left and right channels
  • Power Amplifier: Floating Balanced Power Amplifier design reduces distortion and noise
    • Symmetrical amp layout separates left and right channel circuits for improved signal-to-noise ratio
  • Front: Aluminium front panel and wood side panels
  • Pure Direct Mode: Allows music signals to travel the shortest possible route through the unit's circuitry for cleaner sound

Connectivity & Other Features

  • Line Level Inputs: 4pr x RCA audio inputs for Tuner, CD player etc
  • Line Level Outputs: 1pr x RCA recording outputs
  • Pre-Amp In/Out: Yes
  • Phono Input: Includes MM & MC phono input for connecting a record player
  • Subwoofer Output: No. Connect a sub via the Pre-out terminals
  • Speakers: 2pr binding-post speaker connectors with front-panel A/B switching
  • Headphone Jack: Full size (6.5mm) on front panel
  • 12 Volt Trigger Input: Yes, on rear panel with remote in/out for use with external controllers
  • Remote Control: Included
  • Power Management (Auto Power Standby): Yes
  • Power Input: 220- 240V 50Hz
  • Standby Power Consumption: 0.5 Watt
  • Detachable Power Cable: Yes. Allows for upgrade to something better.
  • Dimensions (WxHxD): 435 x 157 x 463mm
  • Nett Weight: 23.3 kg
  • Manufacturer's Warranty: 2 years

Note: Features & Specifications Subject To Change Without Notice. E.&O.E.

Additional Information

Additional Information

Name Stereo Integrated Amplifier
Brand Yamaha
Colour Black
Power Output Per Channel 71 - 100 Watts RMS
Connectivity Phono Input (MM), Phono Input (MC), A+B Speaker Outputs, Headphone Output, RCA Preamp Outputs
Digital Features None
Amplifier Design Type Class A/B
Shipping Weight (kg) 21.0000
Price Range $2,599


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