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Key Specs
Continuous Watts x Channel @ Ohms: 160W x 2 @ 4
Number of Channels: 2 (The number of discrete channels of sound output. This can be a single number or multiple numbers separated by decimal(s). The first number is the primary, horizontally directed audio channels. The number after the first decimal, if applicable, is the number of subwoofer outputs or channels. The number after the second decimal, if applicable, is the number of height or atmospheric channels designed to immerse the listener by producing overhead sound effects.)
Total Power Handling: 320 watts (How much amplifier (amplified) power (wattage) that can be handled before damaging the product.)
Number of Channels: 2 (The number of discrete channels of sound output. This can be a single number or multiple numbers separated by decimal(s). The first number is the primary, horizontally directed audio channels. The number after the first decimal, if applicable, is the number of subwoofer outputs or channels. The number after the second decimal, if applicable, is the number of height or atmospheric channels designed to immerse the listener by producing overhead sound effects.)
Minimum Frequency Response: 5 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
Total Harmonic Distortion: 0.025 percent (Measurement of the harmonic sound distortion. The lower the percentage, the cleaner the sound.)
Maximum Frequency Response: 100 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
Amplifier Class: A (An amplifier's mode of operation, specifically the conditions in which its electrical current flows for the duration of an audio signal, determines its class. Each class has its strengths and weaknesses when it comes to power efficiency, levels of crossover distortion, and overall sound quality.)
Signal-to-Noise Ratio (SNR): 103 decibels (The ratio of the desired signal's strength to the level of background noise. A ratio higher than 1:1, which equates to greater than 0 decibels, indicates more signal than noise.)
Bass Boost: None (Circuitry that boosts the bass response of the amplifier, improving audio reproduction enhancing the sound of low frequencies. Fixed boost means the level of bass response is preset, whereas variable boost allows the user to make adjustments.)
Features
Bridgeable: false (Bridging an amplifier increases the power it supplies to the speaker(s).)
Dimensions
Product Height: 6.125 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
Product Width: 17.1 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
Product Depth: 18.25 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
Product Weight: 51.6 pounds (The out of box weight of the item.)
Other
UPC: 027108947761
Enjoy quality sound no matter how you listen with this Yamaha A-S2100 A-S2100BL 2-channel integrated amplifier, which features a discrete phono amplifier for rich vinyl playback and a discrete headphone amplifier for crisp private listening.
320W maximum power: 160W x 2 @ 4 ohms, 1KHz, 0.7% THD for powerful sonic performance.
Floating, balanced MOSFET amplifier circuit: Delivers robust, dynamic sound. The symmetrical design achieves left-right separation for 2-channel stereo reproduction.
Fully discrete amplifier construction: Along with all-stage balanced transmission and low impedance helps minimize noise and limit signal transmission loss.
EI transformer: Utilizes 4 large-capacity carbon-sheath block capacitors for vibrant sound, even at high volume levels, and clean, stable power.
Discretely configured phono amplifier: Allows you to enjoy your vinyl collection with rich, clear sound.
Discretely configured headphone amplifier: Offers high-quality audio when listening via headphones.
Digital volume control: Minimizes slew-rate decline and coloring for pure sound and ensures a speedy response to volume changes and steep transients.
Wood panels: Along with machined aluminum knobs offers a stylish look.
Whats Included
A-S2100 320W 2-Ch. Integrated Amplifier
Remote
Owner's manual
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Rated 5 out of 5 stars
Superb performance, definitely high end gear!
I have owned quite a few audiophile amps; tube integrateds & separates from Primaluna, Jolida, audio research and quite a few solid state behemoths like Krell, Rotel, etc. Nothing compares to sound quality of the Yamaha as2100. I was delightfully surprised at its presentation. A perfect balance of resolution, warmth, tonal color and frequency extension. Build quality is equally pleasing both the aesthetics and tactile feel. I like the phono stage too. It is on par or better than some ~ 1k standalone phono stages. My LFD phono stage has only a slight edge over the built in phono of this unit. The built in phono beats the discontinued PS audio GCPH (1k when new). This is undoubtedly a true high end amplifier and definitely recommended to audiophiles.
Posted by audiophile
Rated 5 out of 5 stars
Brilliant amplifier
Great amplifier with clear highs and deep strong bas,only one small suggestion - Something you should know about this amp.It uses relays when switching from loudspeakers to headphones .The same is with input selector.Now this might be a problem - if relay stays in same position many days or weeks,the contacts might oxidate losing tight contact and sound become poor - sharp highs and poor bas.My suggestion is - every time you want to listen music plug in firstly headphones for a second and move the input selector in any position and then turn it back in position you want to listen - doing so you are cleaning the relay surface from ultrathin oxide coat...you will be amazed what difference does it make