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Yamaha A-S2100 Integrated Amplifier


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Power Per Channel (8ohms) 105W
XLR Inputs Yes
Warranty length 2 Years (3 Years on registration)
Brand Yamaha Audio

Tech Specs

- Max (4Ω, 1kHz, 0.7% THD): 160 + 160W
- Power p/Ch (8/6/4/2Ω): 105/135/190/220W
- Damping Factor (DF): 250
- Freq Response: 5 Hz-100 kHz (+0 dB/-3 dB)
- RIAA EQ Deviation: 20 Hz-20 kHz +/-0.5 dB
- TH Distortion: (CD, 20 Hz-20 kHz): 0.025%
- SN Ratio: (CD): 103 dB (S: 200 mV)
- Input Sensitivity (CD): 200mV/47k ohms
- Dimensions (WHD): 435 x 157 x 463mm
- Weight: 23.4 kg; 51.6 lbs.

Product Description

Yamaha A-S2100 integrated stereo amplifier is a true audiophile amplifier, a much desired amplifier from Yamaha's high-end range, they deliver a truly emotive and naturalistic sound.

Balanced Design

Utilising Yamaha’s unique ‘Floating and Balanced’ circuitry design, which aligns the elements at the output stage, based on polarity. The circuit is designed to completely separate the signal into four sides of the left and right channels, based on their polarity, which is essential for truly accurate two-channel stereo, which results in a symmetrical push-pull operation.


The voltage control switch (MOSFET) addition also results in a warm and natural sound, whilst eliminating any deviations, which are caused by different polarities, which is a highly distinguishing characteristic. When combined with mechanical rigidity, floating the entire power amplifiers circuitry minimises any of the negatives that can occur from ground noise or tiny voltage fluctuations. Therefore, this amplifier has a superior signal-to-noise ratio, a and highly defined sound field.

Fully Discrete

To create a fully discrete system Yamaha have split the tone control circuit; therefore, enhancing the slew and response rate which gives increased vitality, true detail and smoothness across the whole spectrum. The A-S2100 reduces signal loss by employing thick cables, screw clamps, and by connecting the power step to the speaker terminals. Bass is improved and is powerful and vibrant due to improvements in the damping factor / power and drivers capacity.

Large Capacity PSU

The chassis has an EI transformer built-in, which has been customised for optimum compatibility.  By combining four carbon sheath block capacitors the amplifiers easily delivers powerful energetic sound even at high intensities. The A-S2100 is equipped with twelve shunt-type local regulators, which prevents signal deterioration as a result of exchange fluctuations in the power signal and therefore the amplifier has a clean and stable power supply. By mounting the EI transformer on the chassis with brass washers it reduces any internal vibrations.

Amplifier Configuration

The phono stage combines an MC headphone amplifier, which is discretely configured, which results in a rich and pronounced sound playing your records with a moving coil (MC) or moving magnet (MM) cartridge. The headphone amplifier is also fully discreetly configured which gives it fantastic drivability and good damping properties. The amplifier also contains a specialised level trimmer which can respond to effectively to various load impedances. Therefore, even when listing to your music over headphones you will be amazed by the superior sound quality.

Speaker Terminals

To attach your loudspeakers to the amplifier Yamaha have employed pure brass screw type terminals, with originally designed handles, which ensures a secure connection, without any loss is the sound quality. The terminals are ergonomically contoured slightly, so they can be turned easily and fastened securely and easily. The terminals are compatible with banana plug connections, so you can choose the type your self.  For the best vibration control you can use the original metal legs, you can have select point installation via the supplied spikes, plane insulation via the supplied pads or you can combine with an interlocking rack.

Level Metres

The display features level metres that give a visual signal of the music you are enjoying through the rapid and delicate movement of needles.  The level metres are softly illuminated by LED lights to give the display a warm lamp-like glow. The metre indicators and VU display can adjusted according to your preferences. The display window is precisely fitted to the panel, which results in a seamlessly flat and elegant appearance.

Elegant Luxury

The A-S2100 has a highly polished design, which showcases the fine craftsmanship that Yamaha have honed over the years of designing and manufacturing world-class instruments. The front and side panels of the A-S2100 are masterfully integrated, and dials and tone controls are precision machined from aluminium, which result in a rich textured finish.

Optimum Sound

The volume control is a top quality ladder-type digital control, which prevents and decline in the slew-rate decline or sound discoloration.  The volume control is exceptionally fast and can respond to large changes and rapid transients. This triple-parallel method is much less detrimental to the sound output than the standard straight line tone controls.

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