The Yamaha A-S1100 Analog Stereo Integrated Amplifier

Yamaha A-S1100 Two-Channel Integrated Stereo Amplifier
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While most home theater audio systems in consumers' homes are used for listening to both movies and music, for some, especially dedicated audiophiles, a home theater receiver doesn't cut it for serious music listening - only a dedicated two-channel audio system will do. For those that require such a setup, Yamaha has an impressive line of two-channel amplifiers. One distinctive offering in this category is A-S1100.

Power Behind Great Styling

To start, the Yamaha A-S1100 is a two-channel integrated stereo amplifier that incorporates heavy duty construction and styling, including a black or silver finish option, wood side panels, and a distinctive front panel with includes large left and right channel analog level/watt meters (I would love to have that feature on a home theater receiver!).

Behind that stylish front panel, which also includes large bass, treble, and balance controls, as well as a rotary input selection switch, and a large classic-style volume control, the A-S1100 incorporates a large capacity power supply, than can push out continuous power over long periods, as well as providing fast recovery and reaction time for audio peaks.

The power output capability for the Yamaha A-S1100 is 90 wpc, using a 20Hz to 20kHz test tone range with an 8-ohm load with a .07% THD. For more details on what these stated power ratings mean with respect to real-world conditions, refer to my article: Understanding Amplifier Power Output Specifications.

The Yamaha A-S1100 is definitely no lightweight in amplifier department - at about 50lbs it is heavier than most home theater receivers - so be careful when lifting or moving.


The Yamaha A-S1100 has all the necessary connections needed for a good two-channel audio listening setup.

To start, 3 sets of analog RCA stereo inputs as well as an audio record in/out record loop for connection of a CD recorder/Audio Cassette Deck, or other compatible recording device are provided.

Also,  Pre-amp out/Main in the loop for connection to an external amplifier or equalizer is provided, if desired.

For vinyl record listening, a dedicated phono turntable input that can accommodate both Moving Magnet (MM) and Moving Coil (MC) phono cartridges (switchable via a front panel control.

In terms of speaker connections, the A-S1100 provides both A and B speaker output connections which can also be configured for bi-wiring setup using heavy-duty brass screw-on speaker terminals.

For private listening, the AS-1100 also includes a front-mounted 1/4-inch headphone jack.

However, one speaker-type connection option you won't find on the Yamaha A-S110 is a subwoofer output - after all, this is classic old school two-channel stereo we are talking about. So for best listening results, it is best to use a set of good full-range floor-standing speakers, rather than bookshelf units.

It is also important to point out that since the A-S1100 is an integrated amplifier, it does not include digital optical/coaxial or USB inputs, built-in AM/FM tuner, internet radio, or access to smartphone app control as would find in a home theater or some stereo receivers. If you want the benefit of one, or more, of those features in a two-channel setup, you might want to check out the Yamaha R-N602 or R-N402 two-channel network Stereo Receivers or add on Yamaha's T-S500 AM/FM Tuner


The A-S1100 is designed to be a match with Yamaha's High-end CD-S2100 CD player (Buy From Amazon) but can be used with any audio source that has analog audio outputs. The A-S1100 can also be used as part of a second or third zone audio system in conjunction with home theater receivers that feature multi-zone capability.

The suggested price for the A-S1100 is $2,999.95 (Available in Silver or Black) - Buy From Amazon