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Best Buy customers often prefer the following products when searching for small amps.

Amplifiers can increase the level or strength of audio signals to help you enjoy full powerful sound. If you're looking for a compact and portable amp that can fit in your bag or just about anywhere else, we've got you covered. Browse the top-ranked list of small amps below along with associated reviews and opinions.

Main Results
  1. Pioneer - 1-Channel - Class D, 1600 W Max Power - Mono Amplifier - Black - Front_Zoom
    Top comment

    "Perfect. Small and compact. Works as intended to do so....Great deal for the price. Small and compact also...Great amp!...Amp"

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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

    "Perfect. Small and compact. Works as intended to do so....Great deal for the price. Small and compact also...Great amp!...Amp"

    See all customer reviews

    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
    Your price for this item is $199.99
    The previous price was $249.99
    See all Multi-Channel Amps
  2. Alpine - S-Series Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Great Amp!!!...Love this amp. It's small but packs a lot of power....Great amp for compact spaces...You can’t go wrong with this great performing amp."

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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 Amp!!!...Love this amp. It's small but packs a lot of power....Great amp for compact spaces...You can’t go wrong with this great performing amp."

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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
  3. KICKER - CX 800W Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Great amp...Small compact amp fits great in location mounted has a lot of power to push my sun...Easy one channel hookup, simple, and how small and compact the amp was"

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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 amp...Small compact amp fits great in location mounted has a lot of power to push my sun...Easy one channel hookup, simple, and how small and compact the amp was"

    See all customer reviews

    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
  4. Pioneer - 4-Channel - Class D, 1200 W Max Power - Amplifier - Black - Front_Zoom
    Top comment

    "Not a bad amp...I bought this to replace a Sony mini amp and I was able to install this myself within an hour. ...amp"

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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

    "Not a bad amp...I bought this to replace a Sony mini amp and I was able to install this myself within an hour. ...amp"

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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. Alpine - Power Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass Filter - Black - Front_Zoom
    Top comment

    "Great amp for small compact areas....This is a good amp for small areas and when you have children. ...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

    "Great amp for small compact areas....This is a good amp for small areas and when you have children. ...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
    See all Multi-Channel Amps
  6. Kenwood - Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Nice small amp...Easy to adjust. Small and compact. Clean and cosmetics are on point...Great little amp...This amp is compact and powers my 2 12" Kenwoods easily plus I only have the amp 1/2 way up. "

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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

    "Nice small amp...Easy to adjust. Small and compact. Clean and cosmetics are on point...Great little amp...This amp is compact and powers my 2 12" Kenwoods easily plus I only have the amp 1/2 way up. "

    See all customer reviews

    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
  7. JBL - Club 600W Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "Great little amp! Pushes my subs perfectly 600w rms power and super tiny. ...amp...does what amps do i suppose. pretty small too right"

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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

    "Great little amp! Pushes my subs perfectly 600w rms power and super tiny. ...amp...does what amps do i suppose. pretty small too right"

    See all customer reviews

    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
    See all Multi-Channel Amps
  8. AudioControl - 300W 4-Channel Class D Micro Amplifier - Black - Front_Zoom
    Top comment

    "Awesome sound for such a small amp. Highly recommended...Powerful Punch out of a small package...Audio Control makes one of the best amps in todays market. The ACM line is simply amazing"

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    Product Description

    Enjoy powerful audio in your vehicle with this 300W 4-Channel Class D Micro Amplifier by AudioControl. The ACM-4.300 features a compact chassis that allows installation in confined spaces and a selectable high-pass crossover to get the most robust sound for your car’s audio system. This micro amplifier also features a reversible cover plate for flexibility in any installation scenario.
    See all Multi-Channel Amps
    Top comment

    "Awesome sound for such a small amp. Highly recommended...Powerful Punch out of a small package...Audio Control makes one of the best amps in todays market. The ACM line is simply amazing"

    See all customer reviews

    Product Description

    Enjoy powerful audio in your vehicle with this 300W 4-Channel Class D Micro Amplifier by AudioControl. The ACM-4.300 features a compact chassis that allows installation in confined spaces and a selectable high-pass crossover to get the most robust sound for your car’s audio system. This micro amplifier also features a reversible cover plate for flexibility in any installation scenario.
    See all Multi-Channel Amps
    Your price for this item is $369.00
    See all Multi-Channel Amps
  9. KICKER - CX 400W Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black - Front_Zoom
    Top comment

    "So compact but so powerful...I’m so impressed with how small but powerful amps like these are now a days. ...Compact...Small yet powerful amp when paired with the right speaker it can really make some bass."

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    Product Description

    Enhance music with this KICKER CX-Series Mono amplifier. The three-second delay when turning this device on or off eliminates unwanted interference, while the subsonic filter removes potentially damaging frequencies. This KICKER CX-Series Mono amplifier has a compact design for easy installation, and the Fail-safe Integration Technology-PLUS provides compatibility to work with almost any radio.
    See all Mono Subwoofer Amps
    Top comment

    "So compact but so powerful...I’m so impressed with how small but powerful amps like these are now a days. ...Compact...Small yet powerful amp when paired with the right speaker it can really make some bass."

    See all customer reviews

    Product Description

    Enhance music with this KICKER CX-Series Mono amplifier. The three-second delay when turning this device on or off eliminates unwanted interference, while the subsonic filter removes potentially damaging frequencies. This KICKER CX-Series Mono amplifier has a compact design for easy installation, and the Fail-safe Integration Technology-PLUS provides compatibility to work with almost any radio.
    See all Mono Subwoofer Amps
    Your price for this item is $169.99
    The previous price was $199.99
    See all Mono Subwoofer Amps
  10. Alpine - S-Series Class D Bridgeable Multichannel Amplifier with Variable Crossovers - Black - Front_Zoom
    Top comment

    "Great amp...Great 4 channel small and compact easy to use great sound for the price...Great Amp...Small doesn’t get hot. Nice options and very clear sound"

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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 amp...Great 4 channel small and compact easy to use great sound for the price...Great Amp...Small doesn’t get hot. Nice options and very clear sound"

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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
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