Skip to content
Main Content
advertisement
Results
No content
Main Results
  1. Sonos - Amp 250W 2.1-Ch Amplifier - Black - Front_Zoom

    Sonos - Amp 250W 2.1-Ch Amplifier - Black

    Your price for this item is $699.99
  2. Definitive Technology - Descend DN8 8" Sub, 3XR Architecture, 500W Peak Class D Amplifier & (2) 8" Bass Radiators - Black - Front_Zoom

    Definitive Technology - Descend DN8 8" Sub, 3XR Architecture, 500W Peak Class D Amplifier & (2) 8" Bass Radiators - Black

    Color:
    Black
    Model: Descend DN8
    SKU: 6467272
    Your price for this item is $499.98
  3. Pioneer - GM-Series 2000 W Max Power 5-Ch. Class-D Amplifier - Black - Front_Zoom

    Pioneer - GM-Series 2000 W Max Power 5-Ch. Class-D Amplifier - Black

    Your price for this item is $260.99
    The previous price was $399.99
  4. Key Digital - 40W 2.0-Ch. Amplifier - Black - Front_Zoom

    Key Digital - 40W 2.0-Ch. Amplifier - Black

    Model: KD-AMP220
    SKU: 6169124

    Not Yet Reviewed

    Your price for this item is $374.98
  5. NAD - PP 4 Digital Phono USB Preamplifier - Black - Front_Zoom

    NAD - PP 4 Digital Phono USB Preamplifier - Black

    Your price for this item is $279.00
  6. Phoenix Gold - GX 1200W 6-Channel Full Range Class D Amplifier - Black - Front_Zoom

    Phoenix Gold - GX 1200W 6-Channel Full Range Class D Amplifier - Black

    Model: GX1200.6
    SKU: 6483767

    Not Yet Reviewed

    Your price for this item is $412.49
    The previous price was $549.99
  7. Bose - Music Amplifier - Black - Front_Zoom

    Bose - Music Amplifier - Black

    Model: 867236-1100
    SKU: 6517686
    Your price for this item is $699.99
  8. advertisement
  9. Sonance - 16-50 AMP - 800W 16.0-Ch. Digital Power Amplifier (Each) - Black - Front_Zoom

    Sonance - 16-50 AMP - 800W 16.0-Ch. Digital Power Amplifier (Each) - Black

    Your price for this item is $2,000.00
  10. Definitive Technology - Descend DN10 10" Sub, 3XR Architecture, 500W Peak Class D Amplifier, (2) 10" Bass Radiators - Black - Front_Zoom

    Definitive Technology - Descend DN10 10" Sub, 3XR Architecture, 500W Peak Class D Amplifier, (2) 10" Bass Radiators - Black

    Color:
    Black
    Model: Descend DN10
    SKU: 6467273
    Your price for this item is $799.98
  11. Marantz - 700W 5.0-Ch. Power Amplifier - Black - Front_Zoom

    Marantz - 700W 5.0-Ch. Power Amplifier - Black

    Your price for this item is $1,499.99
  12. AudioControl - 2-Channel Active Line Output Converter and Line Driver - Black - Front_Zoom

    AudioControl - 2-Channel Active Line Output Converter and Line Driver - Black

    Your price for this item is $89.00
  13. Sonance - 8-50 AMP - 400W 8.0-Ch. Digital Power Amplifier (Each) - Black - Front_Zoom

    Sonance - 8-50 AMP - 400W 8.0-Ch. Digital Power Amplifier (Each) - Black

    Model: 93544
    SKU: 6529834

    Not Yet Reviewed

    Your price for this item is $1,350.00
  14. Arcam - SA10 170W 2.0-Ch. Integrated Amplifier - Gray - Front_Zoom

    Arcam - SA10 170W 2.0-Ch. Integrated Amplifier - Gray

    Your price for this item is $880.00
  15. Gemini - XGA 5000W 2.0-Ch. Amplifier - Black - Front_Zoom

    Gemini - XGA 5000W 2.0-Ch. Amplifier - Black

    Your price for this item is $236.99
    The previous price was $249.99
  16. Gemini - XGA-2000 Professional Power Amplifier - Black - Front_Zoom

    Gemini - XGA-2000 Professional Power Amplifier - Black

    Your price for this item is $179.99
  17. Marantz - PM6007 155W 2-Ch Stereo Integrated Amplifier - Black - Front_Zoom

    Marantz - PM6007 155W 2-Ch Stereo Integrated Amplifier - Black

    Your price for this item is $899.98
  18. KEF - 500W 2.0-Ch Amplifier - Black - Front_Zoom

    KEF - 500W 2.0-Ch Amplifier - Black

    Model: KEF KASA500
    SKU: 6290788
    Your price for this item is $1,200.00
  19. Arcam - SA20 300W Class G 2.0-Ch. Integrated Amplifier - Gray - Front_Zoom

    Arcam - SA20 300W Class G 2.0-Ch. Integrated Amplifier - Gray

    Your price for this item is $1,650.00

Buying an amplifier.

How to pick the best home stereo amplifier.

First the basics: What does an amplifier do, and do you really need one? In a nutshell, a stereo amplifier receives a low voltage signal from the source equipment — a CD player, Blu-ray DVD player or turntable, for instance — and enlarges or amplifies it, sending the signal on its way to powering your speakers. The functions of an audio amplifier can be split into two sectors or components. The first component is known as a preamplifier. It connects all the source devices, can be used to switch between those sources, processes audio or video signals, and sends it all to the second component: the power amplifier. A power amplifier does the heavy lifting, increasing the amplitude of the signal to drive the loads of your speakers. You can select these components as separate units. Or you can get them together in an integrated amplifier, which is a simpler, space-saving option. It also eliminates the necessity of matching the technical specs of the two components so they can work efficiently in tandem.

Another factor that should be considered when you're deciding which speaker amp is the best for you is the class of amplifier. The most common classes are A, AB and D class. Class designations measure how the amplifier handles the input signal to output signal path, factoring in power, efficiency and fidelity, to identify each class of amplifier's performance and characteristics. These designations get complicated fast, dealing with conduction angles, input cycles, sinusoidal wave conductions and more. But in a nutshell, a Class A amplifier gives you the best sound fidelity. But it is the least efficient of the bunch because it’s always on. A class A amplifier provides excellent sound reproduction, especially at low power, but this is at the cost of more energy used and more heat expended. This means adequate ventilation is mandatory. A Class AB amplifier maintains the sound excellence of a class A amplifier, but it adds more efficiency to the process. This makes it a popular choice for home theater and car stereos. A Class D amplifier is the most efficient amplifier type. It's often used in professional PA and car audio systems, where fidelity is of secondary importance to size, weight and heat dissipation.

Adding a new sound amplifier to your home audio system.

You prefer your volume loud. Your stereo is in a big room. Your speakers require a lot of power to drive. You love your bass response. These are all good reasons to add a sound amplifier to your system, even if you already have a receiver. As mentioned, amplifiers are capable of creating significant heat, so you shouldn't cram yours into a small, tight place. Plan on at least 3 inches of clearance above, plus space on the sides and back, to allow proper ventilation and to keep it from overheating. You'll also need room for the connections, the speaker wire and audio cables required to get everything hooked up. If you'd like, you can enlist Geek Squad® help for your home audio setup, which includes connecting your devices and setting up your speakers — all with optimal functionality and a professional look.  

Similar products from outside of Best Buy

advertisement