ZK-MT21 2.1Channel Bluetooth Amplifier Board 50Wx2+100W Audio Stereo Amplifier


Features:

*[2-in-1] High quality power amplifier board. With AUX and Bluetooth two audio input methods, 2-in-1. 5.0 Bluetooth version, the transmission efficiency is higher, the transmission distance is farther

*[High Performance] Bluetooth audio amplifier module 2.1 channel, Max output power 2X50W+100W. With antenna and antenna base, the signal is better, the efficiency is high, and the anti-interference ability is strong

*[Protection Mechanism] With short-circuit protection as well as overcurrent, overheating, and anti reverse connection protection to prevent total failure. In the event of an overload, the device reports the fault condition to the processor to protect itself from damage

*[High Quality] It adopts copper DC connector and fence type terminal. It can withstand large current, no heat, no damage to the wire.

*[Application] With bass, treble, subwoofer frequency and volume control, easy to adjust volume, enjoy the music tone what you want. Widely used in store solicitation, home theater, square speakers, etc


Specifications:

Model: ZK-MT21

Bluetooth Version: 5.0 (without occlusion 15m)

Chip: Domestic power amplifier chip

Audio Input: AUX + Bluetooth

Channel: 2.1

Input sensitivity: 500mV

Adaption Supply Voltage: 12-24V / 5A above (Do not connect to 24V battery pack)

Speaker: 20-100W, 4-8Ohm

Output power: left and right channels <50W; subwoofer <100W

Protection Mechanism: anti reverse connection, overheating, overcurrent, short circuit protection

colour: Black

Material: Plastic

size: 93 x 90 x 22mm

Product weight: about 185g

Tip: Only when the audio input is enough and the power supply voltage/current is enough, there will be enough output power!!!
The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power!!! Please make sure that the power of the adapted power supply is greater than the actual working power of the amplifier!!!

Package Contents:

1 x Amplifier Board


Only the above package content, other products are not included.

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.


  • We only accept the payment by Paypal.
  • Buyers are required to carefully follow payment instructions on the checkout page, and note down any necessary details on it (e.g. bank account details). 
  • If buyers fail to follow the instructions on the checkout page, We are not liable for any unidentified payments and subsequent delivery delays.
  • If you are paying through Paypal using eCheck, note that your item can be shipped only after eCheck has cleared.
  • All payments are expected within 4 days after the last winning auction is closed. A non-payment dispute will be opened if full payment is not received automatically.


  • Our warehouse is located in US. All orders will be shipped from our US warehouse.
  • Combined shipping discount  is offered. Please kindly contact us freely if you need.
  • Orders will be sent by Stand Delivery Free or Express Delivery with extra charge. Delivery times may vary, especially during peak periods. Delivery is not available during   weekends or public holidays.
  • All items will be shipped to the address on Ebay order. Buyers have full responsibility to provide us with the correct delivery address on the checkout page before payment is made.
  • Re-delivery fee may be charged to buyers for items that are undelivered and/or returned to us due to incorrect delivery address or unsuccessful deliveries.


  • If it is the buyer's personal reason to return the item, the return postage fee would be at buyer's charge. 30 days return and exchange is offered,
  • Returns must be agreed by both parties prior to the actual return with 30 business days. 
  • Buyers must also strictly follow our returns procedure when returning an item. 
  • We reserves the rights to provide buyers a replacement, parts or a full or partial refund. Charges may apply if the product is damaged by buyers when the returned item is received. 


  • We make sure everything we do honors that connection – from our commitment to the highest quality items we can achieve, to the way we engage with our customers and communities to do business responsibly.
  • You Are guaranteed to have your items delivered or your money back
  • Shipment in US,Fast delivery guaranteed 
 
Features:

*[2-in-1] High quality power amplifier board. With AUX and Bluetooth two audio input methods, 2-in-1. 5.0 Bluetooth version, the transmission efficiency is higher, the transmission distance is farther

*[High Performance] Bluetooth audio amplifier module 2.1 channel, Max output power 2X50W+100W. With antenna and antenna base, the signal is better, the efficiency is high, and the anti-interference ability is strong

*[Protection Mechanism] With short-circuit protection as well as overcurrent, overheating, and anti reverse connection protection to prevent total failure. In the event of an overload, the device reports the fault condition to the processor to protect itself from damage

*[High Quality] It adopts copper DC connector and fence type terminal. It can withstand large current, no heat, no damage to the wire.

*[Application] With bass, treble, subwoofer frequency and volume control, easy to adjust volume, enjoy the music tone what you want. Widely used in store solicitation, home theater, square speakers, etc


Specifications:

Model: ZK-MT21

Bluetooth Version: 5.0 (without occlusion 15m)

Chip: Domestic power amplifier chip

Audio Input: AUX + Bluetooth

Channel: 2.1

Input sensitivity: 500mV

Adaption Supply Voltage: 12-24V / 5A above (Do not connect to 24V battery pack)

Speaker: 20-100W, 4-8Ohm

Output power: left and right channels <50W; subwoofer <100W

Protection Mechanism: anti reverse connection, overheating, overcurrent, short circuit protection

colour: Black

Material: Plastic

size: 93 x 90 x 22mm

Product weight: about 185g

Tip: Only when the audio input is enough and the power supply voltage/current is enough, there will be enough output power!!!
The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power!!! Please make sure that the power of the adapted power supply is greater than the actual working power of the amplifier!!!

Package Contents:

1 x Amplifier Board


Only the above package content, other products are not included.

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
PAYMENT
  • We only accept the payment by Paypal.
  • Buyers are required to carefully follow payment instructions on the checkout page, and note down any necessary details on it (e.g. bank account details). 
  • If buyers fail to follow the instructions on the checkout page, We are not liable for any unidentified payments and subsequent delivery delays.
  • If you are paying through Paypal using eCheck, note that your item can be shipped only after eCheck has cleared.
  • All payments are expected within 4 days after the last winning auction is closed. A non-payment dispute will be opened if full payment is not received automatically.

SHIPPING
  • Our warehouse is located in US. All orders will be shipped from our US warehouse.
  • Combined shipping discount  is offered. Please kindly contact us freely if you need.
  • Orders will be sent by Stand Delivery Free or Express Delivery with extra charge. Delivery times may vary, especially during peak periods. Delivery is not available during   weekends or public holidays.
  • All items will be shipped to the address on Ebay order. Buyers have full responsibility to provide us with the correct delivery address on the checkout page before payment is made.
  • Re-delivery fee may be charged to buyers for items that are undelivered and/or returned to us due to incorrect delivery address or unsuccessful deliveries.

Terms of Sale
  • If it is the buyer's personal reason to return the item, the return postage fee would be at buyer's charge. 30 days return and exchange is offered,
  • Returns must be agreed by both parties prior to the actual return with 30 business days. 
  • Buyers must also strictly follow our returns procedure when returning an item. 
  • We reserves the rights to provide buyers a replacement, parts or a full or partial refund. Charges may apply if the product is damaged by buyers when the returned item is received. 

ABOUT US
  • We make sure everything we do honors that connection – from our commitment to the highest quality items we can achieve, to the way we engage with our customers and communities to do business responsibly.
  • You Are guaranteed to have your items delivered or your money back
  • Shipment in US,Fast delivery guaranteed 

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