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Best Buy customers often prefer the following products when searching for signal amplifiers.

Signal amplifiers are electronic devices that improve the strength of a signal by making a larger version of it. They are often used in radio receivers and transmitters, but they are also useful in a variety of other applications. Browse the top-ranked list of signal amplifiers below along with associated reviews and opinions.

Main Results
  1. Sonance - 12-50 AMP - 600W 12.0-Ch. Digital Power Amplifier (Each) - Black - Front_Zoom
    Top comment

    "Sonance - Sonamp 600W 12.0-Ch. Digital Power Amplifier is very good!...This is an excellent amplifier that is easy to use....Excellent Amplifier"

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    Product Description

    The Sonamp line appeals to the discerning ear. It has enough flexibility to meet the demands of custom installations. The Sonamp digital amplifiers build on the legacy of innovation, performance and reliability.
    See all Amplifiers
    Top comment

    "Sonance - Sonamp 600W 12.0-Ch. Digital Power Amplifier is very good!...This is an excellent amplifier that is easy to use....Excellent Amplifier"

    See all customer reviews

    Product Description

    The Sonamp line appeals to the discerning ear. It has enough flexibility to meet the demands of custom installations. The Sonamp digital amplifiers build on the legacy of innovation, performance and reliability.
    See all Amplifiers
    See all Amplifiers
  2. KICKER - KEY 500W Mono Amplifier with Variable Crossovers - Black - Front_Zoom
    Top comment

    "I really liked the fact that is has the option of using high signal or low signal for input, time saver!"

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    Product Description

    Boost your car sound system with this 500W Kicker KEY smart mono amplifier. The 24dB subsonic and low-pass crossovers offer effective user control of audio, while the FIT 2+ feature enhances compatibility with various audio systems. This Kicker KEY smart mono amplifier features an AI-controlled DSP to restore sound quality and deliver crisp, even bass, and the compact design allows easy setup.
    See all Car Amplifiers
    Top comment

    "I really liked the fact that is has the option of using high signal or low signal for input, time saver!"

    See all customer reviews

    Product Description

    Boost your car sound system with this 500W Kicker KEY smart mono amplifier. The 24dB subsonic and low-pass crossovers offer effective user control of audio, while the FIT 2+ feature enhances compatibility with various audio systems. This Kicker KEY smart mono amplifier features an AI-controlled DSP to restore sound quality and deliver crisp, even bass, and the compact design allows easy setup.
    See all Car Amplifiers
    See all Car Amplifiers
  3. Russound - P75 2-Ch. Amplifier - Black - Front_Zoom

    Model: 2800-536267
    SKU: 7263263
    Top comment

    "2-ch Amplifier...Great Amplifier"

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    Product Description

    Enhance your home theater setup with this Russound P75 2800-536267 amplifier, which features a 2-channel, dual-source design for flexible connectivity with a variety of audio sources and speakers.
    See all Power Amplifiers
    Top comment

    "2-ch Amplifier...Great Amplifier"

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    Product Description

    Enhance your home theater setup with this Russound P75 2800-536267 amplifier, which features a 2-channel, dual-source design for flexible connectivity with a variety of audio sources and speakers.
    See all Power Amplifiers
    See all Power Amplifiers
  4. Rocketfish™ - Bidirectional Mini Drop Amplifier - Silver - Front_Zoom
    Top comment

    "Helps with weak signals...This amplifier really helped us to get a better signal on our tv...Great for boosting TV signals....My over the air HD antenna came with a powered signal splitter/booster but did not have the power to send the signal to all the TVs. "

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    Product Description

    Only @ Best Buy Connect up to 4 devices to the coaxial connection from your cable or indoor/outdoor VHF/UHF/FM antenna with this mini drop amplifier. It works with the DC power provided by components, or with the AC power provided by the included adapter.
    See all Splitters, Couplers & Adapters
    Top comment

    "Helps with weak signals...This amplifier really helped us to get a better signal on our tv...Great for boosting TV signals....My over the air HD antenna came with a powered signal splitter/booster but did not have the power to send the signal to all the TVs. "

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    Product Description

    Only @ Best Buy Connect up to 4 devices to the coaxial connection from your cable or indoor/outdoor VHF/UHF/FM antenna with this mini drop amplifier. It works with the DC power provided by components, or with the AC power provided by the included adapter.
    See all Splitters, Couplers & Adapters
    See all Splitters, Couplers & Adapters
  5. Metra - One Farad Digital Capacitor - Silver - Front_Zoom
    Top comment

    "Will not magically give you more power or fix your electrical signal. Price too high...Provides more than enough reserve for my 800 watt mono amplifier."

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    Product Description

    This capacitor enhances the sound quality of your vehicle's stereo system and features a digital display that shows the system's working voltage for convenience.
    See all Fuses & Capacitors
    Top comment

    "Will not magically give you more power or fix your electrical signal. Price too high...Provides more than enough reserve for my 800 watt mono amplifier."

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    Product Description

    This capacitor enhances the sound quality of your vehicle's stereo system and features a digital display that shows the system's working voltage for convenience.
    See all Fuses & Capacitors
    See all Fuses & Capacitors
  6. Pioneer - 1-Channel - Class D, 1600 W Max Power - Mono Amplifier - Black - Front_Zoom
    Top comment

    "Powerful digital amplifier great open box deal for 177.00...Great amplifier...Great amplifier with a good looking design. Hard hitting with enough power to push some of the best speakers. "

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    Product Description

    The GM-DX871 mono subwoofer amplifier can deliver up to 800 watts RMS to your subwoofer, for powerful bass that will give every song a strong and heavy beat. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a small chassis that fits in a lot of out of the way spaces.
    See all Multi-Channel Amps
    Top comment

    "Powerful digital amplifier great open box deal for 177.00...Great amplifier...Great amplifier with a good looking design. Hard hitting with enough power to push some of the best speakers. "

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    Product Description

    The GM-DX871 mono subwoofer amplifier can deliver up to 800 watts RMS to your subwoofer, for powerful bass that will give every song a strong and heavy beat. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a small chassis that fits in a lot of out of the way spaces.
    See all Multi-Channel Amps
    See all Multi-Channel Amps
  7. Alpine - S-Series Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Alpine amplifier...This is the best amplifier I have had yet. Alpine makes high quality amplifiers and this one is not only very powerful for it’s size but lighter in weight than a lot of mono amplifiers out. ...I purchased two of these 600 watt amplifiers! I have one amplifier for each subwoofer and I have had zero problems with them and the sound quality is great!! "

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    Product Description

    Pump up the audio in your ride with this Alpine mono power amplifier. Delivering 400W at 4 ohms, or 600W at 2 ohms, this amplifier is powerful enough for speakers and subwoofers. Its small footprint fits almost anywhere in your car. This Alpine mono power amplifier has improved heat sink and shutdown circuit designs to eliminate thermal shutdowns.
    See all Mono Subwoofer Amps
    Top comment

    "Alpine amplifier...This is the best amplifier I have had yet. Alpine makes high quality amplifiers and this one is not only very powerful for it’s size but lighter in weight than a lot of mono amplifiers out. ...I purchased two of these 600 watt amplifiers! I have one amplifier for each subwoofer and I have had zero problems with them and the sound quality is great!! "

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    Product Description

    Pump up the audio in your ride with this Alpine mono power amplifier. Delivering 400W at 4 ohms, or 600W at 2 ohms, this amplifier is powerful enough for speakers and subwoofers. Its small footprint fits almost anywhere in your car. This Alpine mono power amplifier has improved heat sink and shutdown circuit designs to eliminate thermal shutdowns.
    See all Mono Subwoofer Amps
    See all Mono Subwoofer Amps
  8. Sonos - Amp 250W 2.1-Ch Amplifier - Black - Front_Zoom

    Model: AMPG1US1BLK
    SKU: 6312857
    Top comment

    "Low profile amplifier...Great, small profile fit perfectly into a cabinet, provides reliable reception to our upgraded home theater system...Very good amplifiers. Great and easy to expand. A little bulky. "

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    Product Description

    Enhance your home audio with this Class D Sonos amplifier. Its 125W of power per channel lets you enjoy high-resolution sound from your bookshelf speakers, TV and other passive components, and Wi-Fi connectivity supports multiroom setups and wireless streaming via AirPlay and the Sonos app.
    See all Amplifiers
    Top comment

    "Low profile amplifier...Great, small profile fit perfectly into a cabinet, provides reliable reception to our upgraded home theater system...Very good amplifiers. Great and easy to expand. A little bulky. "

    See all customer reviews

    Product Description

    Enhance your home audio with this Class D Sonos amplifier. Its 125W of power per channel lets you enjoy high-resolution sound from your bookshelf speakers, TV and other passive components, and Wi-Fi connectivity supports multiroom setups and wireless streaming via AirPlay and the Sonos app.
    See all Amplifiers
    See all Amplifiers
  9. KICKER - CX 1200W Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Kicker Amplifier...Great Amplifier! Great Qaulity! I've always liked Kickers Stuff!...Amplifier...Amazing amplifier for the price, works great and for a reasonable price"

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    Product Description

    Boost the bass in your car with this KICKER 1200W mono amplifier. Stability at 1 ohm allows for use of multiple sound system wiring options, while a subsonic filter at 24dB protects speakers from dangerous frequencies. This KICKER 1200W mono amplifier features 12dB crossovers to control sound precisely and comes with vertical mounting hardware for unique configurations.
    See all Mono Subwoofer Amps
    Top comment

    "Kicker Amplifier...Great Amplifier! Great Qaulity! I've always liked Kickers Stuff!...Amplifier...Amazing amplifier for the price, works great and for a reasonable price"

    See all customer reviews

    Product Description

    Boost the bass in your car with this KICKER 1200W mono amplifier. Stability at 1 ohm allows for use of multiple sound system wiring options, while a subsonic filter at 24dB protects speakers from dangerous frequencies. This KICKER 1200W mono amplifier features 12dB crossovers to control sound precisely and comes with vertical mounting hardware for unique configurations.
    See all Mono Subwoofer Amps
    See all Mono Subwoofer Amps
  10. Metra - Ground Loop Isolator - Black - Front_Zoom

    Model: TC-GLI
    SKU: 9855136
    Top comment

    "This isolated the signals....When you would turn the aftermarket radio on or off, the factory amplifier would turn on before the radio so you would get a pop from them. "

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    Product Description

    This ground loop isolator integrates into the OEM system of your vehicle to eliminate ground loops for quality audio reproduction.
    See all Amp Accessories & Installation Parts
    Top comment

    "This isolated the signals....When you would turn the aftermarket radio on or off, the factory amplifier would turn on before the radio so you would get a pop from them. "

    See all customer reviews

    Product Description

    This ground loop isolator integrates into the OEM system of your vehicle to eliminate ground loops for quality audio reproduction.
    See all Amp Accessories & Installation Parts
    See all Amp Accessories & Installation Parts
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