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Hosyond

ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater

  • Based on 90 reviews
Condition: New
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$17.98 Why this price?
4th of July Sale · 68% off was $55.99

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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Jul 5
Order within 6 hours and 24 minutes
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Style: ZK-MT21


Features

  • [Two Input Methods] It has two audio input methods: Bluetooth and 3.5mm AUX. Bluetooth 5.0 version, higher transmission efficiency, transmission distance up to 49 feet (no obstruction).
  • [Treble and Bass Adjustment] 2.1 channel, maximum output power 2X50W+100W. By adjusting the high and low frequency knobs, you can make the sound more layered and the bass more shocking.
  • [Protection Function] It has short circuit protection, overcurrent, overheating, and anti-reverse connection protection. When an overload occurs, the device reports the fault condition to the processor to protect itself from damage.
  • [High Quality] Features copper DC connectors and barrier style terminals. It can withstand large currents without generating heat or damaging wires. Comes with a DC head lead, which is compatible with the input power interface of this product. Even if you dont have a DC head adapter or battery, you can easily connect it.
  • [Application] Widely used in store solicitation, home theaters, DIY speakers, etc. If you have any questions about the product, or the product has quality problems, please feel free to contact us and we will give you a satisfactory answer.

Voltage: 12 Volts (DC)


Manufacturer: Hosyond


Maximum Supply Voltage: 24 Volts (DC)


Minimum Supply Voltage: 12 Volts (DC)


Mounting Type: Surface Mount


Voltage: 12 Volts (DC)


Maximum Supply Voltage: 24 Volts (DC)


Minimum Supply Voltage: 12 Volts (DC)


Mounting Type: Surface Mount


Number of Channels: 2


Output Power: 50 Watts


Package Type Name: Box or Clamshell


Maximum Output Power: 100W


Material Type: Copper


Specification Met: CE


Manufacturer: Hosyond


Model: MT21


Brand Name: Hosyond


Warranty Description: NO


UPC: 768572762640


Part Number: MT21


Included Components: 2.1 Bluetooth Amplifier board


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jul 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great little DIY amp for my PC
Great sound from a tiny amp! Using an old laptop power supply to power it, works great!
Reviewed in the United States on March 27, 2025 by Arthur Dellea
    • Used to upgrade my proton pack
Review Image by Patrick Patrick
Review Image by Patrick Patrick
Review Image by Patrick Patrick
Easy to put together and has good shielding which makes for good sound quality. Some reviews didn’t like that it didn’t come with a pre wired power supply, that was advantageous for my project. I was able to easily wire it up to an adapter for the 18v ryobi one battery of which I have several of. Paired with a 60w subwoofer and two 8w speakers it sounds incredible. The limitations are on how much the bass makes the pack rattle. I particularly like how I can control the speakers and bass volumes independently. Fit inside my pack in the battery opening perfectly for easy access to volume control when not wearing the pack. The amount of sound upgrade for the price I paid is phenomenal. When I get a chance I’ll include a video of it coming to life ... show more
Reviewed in the United States on November 25, 2024 by Patrick Patrick
    • Not what was advertised
Got the non-bluetooth amp, even though the description was for one with bluetooth capability. Unfortunately was away and missed the return deadline. Had to buy another (TB, not MT). Performance-wise, they both pack a punch for how tiny they are. Not super quiet, but for general music listening around the house using a sub and a couple bookshelf speakers, an inexpensive option to an actual HT receiver. ... show more
Reviewed in the United States on February 2, 2025 by some user
    • Very good value
Works great for a shop radio system. Plenty of sound and easy to assemble and hook up.
Reviewed in the United States on July 8, 2024 by James York
    • Nice investment
Absolutely worth the money! If u plan on pushing subs I suggest u go a step up to the 220w! This does decent but definitely work the money
Reviewed in the United States on April 26, 2025 by Trevor
    • Great Little Amp!
I could not ask for more from a sub $20 amp. I bought a 24v power adapter for it and this little guy packs a lot of punch. It runs a little warm, but nothing out of the usual.
Reviewed in the United States on May 1, 2025 by Andrew Debes
    • Not shabby
Works pretty good other than bluetooth range is approximately 5 feet then it cuts out.
Reviewed in the United States on November 1, 2024 by Dont worry bout it
    • Nice little amp with a sub output!
This is a really nice amp. I gutted my Logitech computer subwoofer and hardwired it to the sub output and it works great and got a pair of cheap pyramid speakers as well and mounted them on the side of the sub housing. I also upgraded the power supply to 24vdc to get the most power output to the speakers. ... show more
Reviewed in the United States on January 9, 2025 by Michael R.

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