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Best Buy customers often prefer the following products when searching for smallest amplifier.

An amplifier is a device that takes an electrical signal and increases its strength by adding energy to it. It does this by increasing the amplitude of the signal. Amplifiers are used in all manner of applications, from music and audio equipment to computers and other electronic devices. If you're searching for the smallest amplifier that still packs a powerful punch, we've got you covered. Browse the top-ranked list of some of our smallest amplifiers below along with associated reviews and opinions.

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  1. Nady - AxeHead™ Mini Headphone Guitar Amplifier - Front_Zoom
    Top comment

    "It does what I want. I wanted something compact that allowed me to play my electric guitar through headphones without disturbing others. ...This is an incredible jam machine in a tiny little box! Recommend to one and all, new or old, you'll love this!"

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    Product Description

    Practice guitar without disturbing anyone with this AxeHead headphone guitar amp. It plugs directly into your instrument, and its amp-simulation capability delivers professional-sounding audio through your headphones without the need for a bulky amp and speaker. This AxeHead headphone guitar amp operates for up to 15 hours on a single battery charge.
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    Top comment

    "It does what I want. I wanted something compact that allowed me to play my electric guitar through headphones without disturbing others. ...This is an incredible jam machine in a tiny little box! Recommend to one and all, new or old, you'll love this!"

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    Product Description

    Practice guitar without disturbing anyone with this AxeHead headphone guitar amp. It plugs directly into your instrument, and its amp-simulation capability delivers professional-sounding audio through your headphones without the need for a bulky amp and speaker. This AxeHead headphone guitar amp operates for up to 15 hours on a single battery charge.
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    Your price for this item is $29.99
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  2. Alpine - S-Series Class D Bridgeable Multichannel Amplifier with Variable Crossovers - Black - Front_Zoom
    Top comment

    "Great 4 channel small and compact easy to use great sound for the price...Great amplifier...Great amplifier. Easy to install. Turned car into an amphitheater with tremendous bass added to speakers"

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    Product Description

    Pump up the audio in your ride with this Alpine S-Series four-channel car amplifier. Delivering 55W per channel, or 160W to a subwoofer and 55W to two channels, this amplifier is extremely versatile. The compact size provides mounting versatility. This Alpine S-Series four-channel car amplifier automatically reduces output when it senses overheating risks.
    See all Multi-Channel Amps
    Top comment

    "Great 4 channel small and compact easy to use great sound for the price...Great amplifier...Great amplifier. Easy to install. Turned car into an amphitheater with tremendous bass added to speakers"

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    Product Description

    Pump up the audio in your ride with this Alpine S-Series four-channel car amplifier. Delivering 55W per channel, or 160W to a subwoofer and 55W to two channels, this amplifier is extremely versatile. The compact size provides mounting versatility. This Alpine S-Series four-channel car amplifier automatically reduces output when it senses overheating risks.
    See all Multi-Channel Amps
    Your price for this item is $212.99
    The previous price was $219.99
    See all Multi-Channel Amps
  3. Alpine - Power Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass Filter - Black - Front_Zoom
    Top comment

    "This product is well worth the money. It's small compact and makes my music sound fantastic....Great sound from a small compact unit...Great sound from a small compact unit, excellent installation from geek squad"

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    Product Description

    Give your car stereo system a power boost with this Alpine Power Pack KTP-445U 180W Class D bridgeable 4-channel amplifier that features a 12dB/Oct high-pass filter for powerful sound.
    See all Multi-Channel Amps
    Top comment

    "This product is well worth the money. It's small compact and makes my music sound fantastic....Great sound from a small compact unit...Great sound from a small compact unit, excellent installation from geek squad"

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    Product Description

    Give your car stereo system a power boost with this Alpine Power Pack KTP-445U 180W Class D bridgeable 4-channel amplifier that features a 12dB/Oct high-pass filter for powerful sound.
    See all Multi-Channel Amps
    Your price for this item is $289.99
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  4. Pioneer - 4-Channel - Class D, 1200 W Max Power - Amplifier - Black - Front_Zoom
    Top comment

    "Maybe the Pioneer was a tiny bit less detailed, but you would have to really pay attention to notice the small difference. ...Amplifier"

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    Product Description

    The Pioneer GM-DX874 four-channel amplifier will deliver up to 150 watts RMS to each of your front and rear speakers for powerful music. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis that fits in a lot of out of the way spaces. The frequency response of this amplifier stretches up to 50,000 Hz, for Hi-Res Audio Certified playback. Pioneer uses high-grade electronic parts and gold-plated RCA connections to ensure maximum performance. Speaker-level inputs allow you to install this amp in a factory system with no RCA connections. The amplifier switches its input mode automatically when it detects the high-level signal, eliminating the need to run a turn-on lead to your receiver or fuse box. Built-in high- and low-pass filters let you adjust the sound for your vehicle's interior, whether you're driving speakers or subs.
    See all Multi-Channel Amps
    Top comment

    "Maybe the Pioneer was a tiny bit less detailed, but you would have to really pay attention to notice the small difference. ...Amplifier"

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    Product Description

    The Pioneer GM-DX874 four-channel amplifier will deliver up to 150 watts RMS to each of your front and rear speakers for powerful music. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis that fits in a lot of out of the way spaces. The frequency response of this amplifier stretches up to 50,000 Hz, for Hi-Res Audio Certified playback. Pioneer uses high-grade electronic parts and gold-plated RCA connections to ensure maximum performance. Speaker-level inputs allow you to install this amp in a factory system with no RCA connections. The amplifier switches its input mode automatically when it detects the high-level signal, eliminating the need to run a turn-on lead to your receiver or fuse box. Built-in high- and low-pass filters let you adjust the sound for your vehicle's interior, whether you're driving speakers or subs.
    See all Multi-Channel Amps
    Your price for this item is $219.99
    The previous price was $269.99
    See all Multi-Channel Amps
  5. Williams Sound - PKT D1 Pocketalker Ultra Duo Pack - Black - Front_Zoom
    Top comment

    "This product was more expensive than other small amplifiers but this one can amplify more and is easier to reduce feedback by adjusting tone or using the included extension to move the microphone farther away from the headset. ...Great personal amplifier...The Williams Sound Pocketalker Ultra Personal Amplifier is a small battery powered mono amplifier designed to aid those with and without hearing impairment better hear faint sounds. "

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    Product Description

    Pocketalker Ultra System amplifies sounds closest to the listener while reducing background noise. Ideal for one-on-one conversation, small-group and television listening, or conversing in the car. Use with or without hearing aids. Simply plug in your earpiece, position the microphone near the preferred sound, adjust volume to your comfort – and start listening.
    See all Hearing Aids & Amplifiers
    Top comment

    "This product was more expensive than other small amplifiers but this one can amplify more and is easier to reduce feedback by adjusting tone or using the included extension to move the microphone farther away from the headset. ...Great personal amplifier...The Williams Sound Pocketalker Ultra Personal Amplifier is a small battery powered mono amplifier designed to aid those with and without hearing impairment better hear faint sounds. "

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    Product Description

    Pocketalker Ultra System amplifies sounds closest to the listener while reducing background noise. Ideal for one-on-one conversation, small-group and television listening, or conversing in the car. Use with or without hearing aids. Simply plug in your earpiece, position the microphone near the preferred sound, adjust volume to your comfort – and start listening.
    See all Hearing Aids & Amplifiers
    Your price for this item is $179.99
    The previous price was $199.00
    See all Hearing Aids & Amplifiers
  6. Rocketfish™ - Bidirectional Mini Drop Amplifier - Silver - Front_Zoom
    Top comment

    "Mini drop amplifier...Works better than most amplifiers you get with standard antennas...Rocketfish - Bidirectional Mini Drop Amplifier - S...Rocketfish - Bidirectional Mini Drop Amplifier - was just what I needed. Not as strong as a commercial amplifier, but got the job done."

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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

    "Mini drop amplifier...Works better than most amplifiers you get with standard antennas...Rocketfish - Bidirectional Mini Drop Amplifier - S...Rocketfish - Bidirectional Mini Drop Amplifier - was just what I needed. Not as strong as a commercial amplifier, but got the job done."

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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.
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    Your price for this item is $34.99
    See all Splitters, Couplers & Adapters
  7. Kenwood - Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Great little amplifier...It small an powerful i have it connected to 1 compact 12...Amplifier...Bought to replace a similar item , very sleek and compact."

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    Product Description

    Provide sufficient power for a subwoofer with this Kenwood Class D amplifier. It provides 500W per channel at 2 ohms for creating thumping bass, and the compact size makes it suitable for an automobile installation. This Kenwood Class D amplifier has aluminum screw mounting hardware for securing it to a flat surface.
    See all Mono Subwoofer Amps
    Top comment

    "Great little amplifier...It small an powerful i have it connected to 1 compact 12...Amplifier...Bought to replace a similar item , very sleek and compact."

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    Product Description

    Provide sufficient power for a subwoofer with this Kenwood Class D amplifier. It provides 500W per channel at 2 ohms for creating thumping bass, and the compact size makes it suitable for an automobile installation. This Kenwood Class D amplifier has aluminum screw mounting hardware for securing it to a flat surface.
    See all Mono Subwoofer Amps
    Your price for this item is $149.99
    The previous price was $199.99
    See all Mono Subwoofer Amps
  8. KICKER - CX 800W Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Great amplifier...Great amplifier. Small and compact with a nice amount of power behind it....Small compact amp fits great in location mounted has a lot of power to push my sun"

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    Product Description

    Create a custom sound experience with this KICKER CX-Series mono amplifier. The variable 12dB crossovers provide the control you need to get the exact sound you want, and the 24dB subsonic filter protects against damaging frequencies. With its small footprint and Fail-safe Integration Technology-PLUS, this KICKER CX-Series mono amplifier is easy to install and works with almost any radio.
    See all Mono Subwoofer Amps
    Top comment

    "Great amplifier...Great amplifier. Small and compact with a nice amount of power behind it....Small compact amp fits great in location mounted has a lot of power to push my sun"

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    Product Description

    Create a custom sound experience with this KICKER CX-Series mono amplifier. The variable 12dB crossovers provide the control you need to get the exact sound you want, and the 24dB subsonic filter protects against damaging frequencies. With its small footprint and Fail-safe Integration Technology-PLUS, this KICKER CX-Series mono amplifier is easy to install and works with almost any radio.
    See all Mono Subwoofer Amps
    Your price for this item is $254.99
    The previous price was $299.99
    See all Mono Subwoofer Amps
  9. Alpine - S-Series Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Great amplifier...Great amplifier really packs a punch very small takes up no space...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. "

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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

    "Great amplifier...Great amplifier really packs a punch very small takes up no space...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. "

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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
    Your price for this item is $199.99
    The previous price was $249.99
    See all Mono Subwoofer Amps
  10. JBL - Club 600W Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Pushes my subs perfectly 600w rms power and super tiny. Only thing was the min max levels were swapped so be careful with that...I give this JBL amplifier 5 stars because small an gets the job done an Works great for my "12" subwoofer"

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    Product Description

    Enjoy robust, realistic music in your vehicle with this JBL Club car amplifier. The compact size allows for a simple installation process, while the 600W of peak power deliver dynamic, rich bass with low distortion. This JBL Club car amplifier has an included wired RBC remote that supports easy, convenient volume control, and the wire-to-RCA adapters provide secure connections.
    See all Multi-Channel Amps
    Top comment

    "Pushes my subs perfectly 600w rms power and super tiny. Only thing was the min max levels were swapped so be careful with that...I give this JBL amplifier 5 stars because small an gets the job done an Works great for my "12" subwoofer"

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    Product Description

    Enjoy robust, realistic music in your vehicle with this JBL Club car amplifier. The compact size allows for a simple installation process, while the 600W of peak power deliver dynamic, rich bass with low distortion. This JBL Club car amplifier has an included wired RBC remote that supports easy, convenient volume control, and the wire-to-RCA adapters provide secure connections.
    See all Multi-Channel Amps
    Your price for this item is $263.99
    Clearance
    The regular price is $309.99
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