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    ZK-MT21 2.1 Channel Bluetooth Amplifier Board Mini 12V-24V Audio Receiver with Subwoofer Output, Bass Treble Control DIY Home TV Car Stereo Amp for Passive Speakers

    • Big Power in Tiny SizeDrives left/right speakers (50W each, 4-8) plus subwoofer (100W). Perfect for bookshelf speakers, TV soundbars, or DIY boomboxes.
    • Dual Input Modes Bluetooth & AUX Stream wirelessly via Bluetooth 5.0 (up to 33ft) or connect any device using the 3.5mm AUX input. Works with phones, TVs, computers, and more.
    • More Power with 24V Supply Runs on DC 12V-24V / 5A or above (power supply NOT included). Higher voltage = bigger sound. Users say 24V makes it "room-shaking."
    • Full Tone Control Knobs Separate controls for master volume, sub level, sub frequency (20-200Hz), plus bass and treble for left/right channels. Fine-tune your perfect sound.
    • Easy DIY AssemblyComes with top/bottom covers, 8 small screws, 5 knob caps, and a screwdriver. Barely gets warm even after hours of use. Great for reviving old speakers.
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    Overview
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    Size

    Name:ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Module

    Product Description

    Power Amplifier Chip: Amp chip

    Input Voltage : DC 12V-24V Input Sensitivity: 500mV

    Max Power Output: 50W+50W+100W Input Method: Bluetooth &AUX

    Channel: 2.1 CH stereo Output Output impedance : 4-8O

    Bluetooth Version: BT 5.0 (unobstructed,10meters)

    Output power : Left and right channels =50W,Subwoofer =100W

    Protection mechanism: overvoltage,undervoltage,overheating,short circuit protection

    home theater

    Tip: Only when the audio input is sufficient and the power supply voltage/current is sufficient, can there be sufficient output power !!! The higher the power supply voltage, the greater the output power, the smaller the horn impedance, and the greater the output power !!! Please ensure that the power of the adapter power supply is greater than the actual working power of the amplifier !!

    car audio

    Domestic Hifi Chip

    Domestic Hifi Chip

    This Bluetooth amplifier board features a HiFi power amplifier chip that delivers up to 50W per channel.

    Large Heat Sink

    Large Heat Sink

    The large heatsink quickly dissipates heat, allowing the chip to deliver sustained high power without risk of damage.

    Premium Wiring Terminals

    Premium Wiring Terminals

    Wiring is quick and hassle-free, with no damage to the wires. The 5.5mm x 2.1mm DC input accepts most laptop power adapters.

    Adjustable Treble, Bass, and Subwoofer

    Adjustable Treble, Bass, and Subwoofer

    Endless sound possibilities. Experience a mini movie theater at home — all from a tiny amp.

    outdoor speaker
    packing list
    https://m.media-amazon.com/images/S/aplus-media-library-service-media/d89f17d3-dbe8-48c3-b4e2-75c13f4c0306.__AC_SR150,300___.jpg
    ZK-MT21 2.1 Channel Bluetooth 5.0 Power Amplifier Board, 50W*2+100W Home Audi...
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    HOCHANAN Bluetooth Amplifier Board YS-S350H Bluetooth-Compatible 220W*2+350W ...
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    Customer Reviews
    Price
    Amplifier Chip Amp Chip TPA3255 TPA3116D2
    MAX Power 50W+50W+100W 220W+220W+350W 50W+50W+100W
    Input BT/AUX BT/AUX/USB BT/AUX
    Size

    Name:ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Module

    Product Description

    Power Amplifier Chip: Amp chip

    Input Voltage : DC 12V-24V Input Sensitivity: 500mV

    Max Power Output: 50W+50W+100W Input Method: Bluetooth &AUX

    Channel: 2.1 CH stereo Output Output impedance : 4-8O

    Bluetooth Version: BT 5.0 (unobstructed,10meters)

    Output power : Left and right channels =50W,Subwoofer =100W

    Protection mechanism: overvoltage,undervoltage,overheating,short circuit protection

    home theater

    Tip: Only when the audio input is sufficient and the power supply voltage/current is sufficient, can there be sufficient output power !!! The higher the power supply voltage, the greater the output power, the smaller the horn impedance, and the greater the output power !!! Please ensure that the power of the adapter power supply is greater than the actual working power of the amplifier !!

    car audio
    Domestic Hifi Chip

    Domestic Hifi Chip

    This Bluetooth amplifier board features a HiFi power amplifier chip that delivers up to 50W per channel.

    Large Heat Sink

    Large Heat Sink

    The large heatsink quickly dissipates heat, allowing the chip to deliver sustained high power without risk of damage.

    Premium Wiring Terminals

    Premium Wiring Terminals

    Wiring is quick and hassle-free, with no damage to the wires. The 5.5mm x 2.1mm DC input accepts most laptop power adapters.

    Adjustable Treble, Bass, and Subwoofer

    Adjustable Treble, Bass, and Subwoofer

    Endless sound possibilities. Experience a mini movie theater at home — all from a tiny amp.

    outdoor speaker
    packing list
    https://m.media-amazon.com/images/S/aplus-media-library-service-media/d89f17d3-dbe8-48c3-b4e2-75c13f4c0306.__AC_SR150,300___.jpg
    ZK-MT21 2.1 Channel Bluetooth 5.0 Power Amplifier Board, 50W*2+100W Home Audi...
    https://m.media-amazon.com/images/S/aplus-media-library-service-media/78773362-4e48-4d5c-95a5-dc7264ec1751.__AC_SR150,300___.jpg
    HOCHANAN Bluetooth Amplifier Board YS-S350H Bluetooth-Compatible 220W*2+350W ...
    https://m.media-amazon.com/images/S/aplus-media-library-service-media/b78d00e6-7e5a-46b6-8a3c-409124df0074.__AC_SR150,300___.jpg
    ZK-TB21 2.1 Channel Bluetooth 5.0 Amplifier Board, 50W+50W+100W Subwoofer Amp...
    Customer Reviews
    Price
    Amplifier Chip Amp Chip TPA3255 TPA3116D2
    MAX Power 50W+50W+100W 220W+220W+350W 50W+50W+100W
    Input BT/AUX BT/AUX/USB BT/AUX
    ZK-MT21 2.1 Channel Bluetooth Amplifier Board Mini 12V-24V Audio Receiver with Subwoofer Output, Bass Treble Control DIY Home TV Car Stereo Amp for Passive Speakers

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