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ZK-HT21 Bluetooth Amplifier Board 160W×2+220W Subwoofer 2.1 Channel

  • Based on 53 reviews
Condition: New
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Availability: In Stock.
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Arrives Wednesday, Aug 26
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Features

  • AUX,Bluetooth,USB and Subwoofer Inputs: The Bluetooth amplifier board integrates AUX,Bluetooth,USB and Subwoofer Inputs.There is 3.5 MM AUX inputs,you can connect cellphone,laptop or TV etc (The wire connect AUX input is not included in the package).With Bluetooth 5.0 version,it is easy to connect quickly within 10M/32FT unobstructed.USB and Subwoofer Inputs also can be used according to your need. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected;
  • Perfect Protection Mechanism: The Bluetooth amplifier board is designed with protection mechanism, including overvoltage, undervoltage, overheating, DC detection protection and short circuit protection. When overload happens, it will protect itself from damage.
  • TDA7498E ChipThe Bluetooth amplifier board is equipped with two imported original TDA7498E chip, 2.1 Channel configuration, that is left channel (maximum power output 160W), right channel (maximum power output 160W) and subwoofer output (maximum power output 220W).
  • Compatible Speakers: The Bluetooth amplifier board are suitable for 30-200W, 4-8 passive speakers, so you can match different passive speakers as your need. (Passive speakers only,not Bluetooth speakers or active speakers).The Adapted power supply is DC 15-36V(less than 9V undervoltage protection.The higher voltage,the higher the output power)
  • Multifunctional Dial ButtonThe dial button is multifunctional:Press Down-Short press: pause/play,Long press: Switch input mode(Bluetooth/AUX/USB Flash drives);Dial Right- Short press: Play the next music,Long press: Volume increases;Dial Left-Short press: Play the previous music,Long press: Volume decrease.

Description

Equipped with two TDA7498E chips,the 2.1 channel Bluetooth amplifier board has peak power up to Left and right channels≤160W,Subwoofer≤220W. This Power Amplifier Board has several inputs: Bluetooth 5.0, USB Flash Drives,3.5mm AUX and Subwoofer Input . If you use the AUX mode, please make sure the Bluetooth connection is disconnected. Overvoltage,Undervoltage,Overheat,DC detetion,Short circuit protection Power Amplifier Board * 1 Protective Shell * 1 Set Screwdriver * 1 Knob * 5 Unobstructed,within 32 FT/10 M

Manufacturer: AEXCVG


Maximum Supply Voltage: 36 volts_of_direct_current


Minimum Supply Voltage: 15 volts_of_direct_current


Mounting Type: Surface Mount


Brand: AEXCVG


Maximum Supply Voltage: 36 volts_of_direct_current


Minimum Supply Voltage: 15 volts_of_direct_current


Mounting Type: Surface Mount


Number of Channels: 3


Maximum Output Power: 540 watts


Specification Met: FCC


Manufacturer: AEXCVG


Model: ZK-HT21


Brand Name: AEXCVG


Number of Items: 1


Warranty Description: 1


Unit Count: 1 Count


Included Components: screwdriver


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 26

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.

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Top Amazon Reviews


  • Compact amp and sounds great!
My SA100 Dayton Audio subwoofer amp starter making terrible random popping and humming noise even when the soundvar feeding a sub signal to it was turned off so this little amp to the rescue. Lol. This thing is sick. Very compact and seems to be a quality built part. The plastic knobs feel and look cheap but I'm sure they'll be fine. Sounds great. Makes me subs sing and I can power a couple of bookshelf speakers with it. I also like the Bluetooth option. Only wished it had a remote control not sure if there is something I can add to it. Excellent value. I'm powering mine with a 36V power supply. Let's see how long it lasts. Hopefully longer than the SA100 did. ... show more
Reviewed in the United States on April 5, 2026 by Google123

  • Great amp
This amplifier exceeded my expectations for my DIY speaker build. It delivers clean, powerful sound with plenty of headroom, and the audio stays crisp even when I turn the volume up. Installation was simple, everything worked right out of the box, and it has been rock solid ever since. If you're building a custom speaker and want great performance without spending a fortune, this amp is an excellent choice. I would definitely use it again on my next build. ... show more
Reviewed in the United States on August 1, 2026 by Kara

  • Really good amp for the price
It's been outside for a few months now. No issues. Works great but you really need a beefy power supply for it to work really good. I literally have a old theater 2.1 set up powering 2 tower speakers and a 12 inch sub. And all speakers are to the specifications of the amp so it's running them like a champ. And loud. Sounds clean no ground noise bluetooth is good n stable. The amp has never shut down or over heated on me. Again you need a big power supply for it I used a old 24V but if you have a higher voltage one even better just don't go over the max rated voltage the amp is rated for. You will fry it. Highly recommend it but if you don't have a extra power supply it will probably cost more than the amp for a 24V or higher PSU. You can use a weaker PSU but it could make your speakers sound bad or over heat your power supply causing it to shut down it depends how much power your speakers can pull. Small speakers it's fine, for bigger ones and subs you will need higher voltage PSU. ... show more
Reviewed in the United States on April 5, 2026 by A.K.

  • Nice set up
Replaced with same model I bought about three years ago. I think I burned it up with my subwoofer set too high or something. New one looks good and sounds great. I love this set up where it’s out of sight in my vehicle. Make sure you get a good quality speaker that can handle low to average input.
Reviewed in the United States on February 25, 2026 by Theodore A. Greenman

  • Great sound
With the right power supply this far exceeded my expectations. Awesome wee amplifier!
Reviewed in the United States on July 28, 2026 by Lyndon Jackson

  • Quality product impressive sound
I've bought a couple of these and they are pretty impressive for the price, unfortunately the last one I bought had some issues but returning felt fairly simple other than the drive across town and waiting to have my money returned so I can make another purchase in my pursuit of customized portable sound systems. ... show more
Reviewed in the United States on June 2, 2026 by Randolph

  • Good audio output
Great for your money I built a party box out of it works amazing haven't had any problems with it it does rattle a little bit but nothing bad
Reviewed in the United States on July 19, 2026 by Logan

  • Cool
It is really awesome, It sound good and clear, it makes my subs move way more than my old amplifier, but there is one issue, every time when a video or a music audio goes silent for a sec, there is a little delay every time, I doubled checked to see if it was just the music I was listening but no it was the amp. But overall it is a great little stereo system, pretty affordable, other than the delay it works really well, I would buy another one. ... show more
Reviewed in the United States on January 26, 2026 by Cool

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