ZK-TB21 Bluetooth 5.0 amplifier board comes with 2.1 channel stereo,Dual TPA3116D2 Chips,THD ≤0.1%. Wide Voltage Input DC: 9-24V.
Bluetooth+AUX Input:50W+50W+100W Bluetooth 5.0 Audio Amplifier Board, Bluetooth+AUX audio dual input, 2.1 channel stereo output, with AM interference suppression function. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected.
Treble and Bass Control:This digital audio amplifier board with independent treble and bass knob,the treble and bass can be adjusted by these knobs, no need to using the player or speaker.
Protective Function:This power amplifier board is designed with over-voltage protection, under-voltage protection, over-heat protection and short-circuit protection.
Note: In the case of audio input and power supply voltage/current is enough to have enough output power.The higher the supply voltage, the higher the output power.The lower the speaker impedance, the higher the output power.Please make sure that the power of the adapted power supply is greater than the actual working power of the amplifier

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50W+50W+100W Amplifier Board with Treble and Bass Control, Bluetooth 5.0 HiFi 2.1 Channel Subwoofer 

50W+50W+100W Amplifier Board with Treble and Bass Control, Bluetooth 5.0 HiFi 2.1 Channel Subwoofer Stereo Amplifier Board, Dual TPA3116D2 Chip BT and AUX Inputs for DIY Wireless Speakers (ZK-TB21)

The ZK-MT21 power amplifier board uses Bluetooth 5.0, and its transmission distance can reach 49 feet (without obstruction). At the same time, this power amplifier board has a 3.5mm AUX audio input interface. No matter what kind of input method, you can always find a method that suits you..
With bass, treble, subwoofer frequency and volume control, easy to adjust volume, enjoy the music tone what you want. If you are tired of the inherent high & low bass, why not try the high & low control knob. This will make you feel like being in a movie theater..
Bluetooth audio amplifier module 2.1 channel, Max output power 2X50W+100W. The signal is better, the efficiency is high, and the anti-interference ability is strong..
ZK-MT21 Bluetooth power amplifier board has multiple protection mechanisms to ensure its safe operation. It has short circuit protection, over-current, over-heat, and anti-reverse protection. When an overload occurs, the device reports the fault condition to the processor to protect itself from damage..
It adopts copper DC connector and fence type terminal. It can withstand large current, no heat, no damage to the wire. Using a universal 5.5mm * 2.1mm plug interface for power supply.

DiGiYes Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 50W x 2+100W DC 12V-24V Audio Pow

DiGiYes Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 50W x 2+100W DC 12V-24V Audio Power Amplifier Module for DIY Bluetooth Audio and Store Home Theater with Treble and Bass Control

Subwoofer Audio Amplifier Board: 50W+50W+100W Bluetooth 5.0 wireless connection, Bluetooth+AUX audio input, 2.1 channel stereo output, just a little sound distortion. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected;.
Treble and Bass Adjustment: This digital Amp board with independent treble and bass adjustment buttons,you can directly adjust the treble and bass through the module, without using the player or speaker;.
Perfect Sound Quality Experience: The audio power subwoofer amplifier module with powerful chip, AM interference suppression function, shielding power inductance, low noise front stage operational amplifier, let you enjoy a more perfect sound quality experience;.
With Protective Function: This Bluetooth Amp module is designed with over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection, with case to protective it;.
Easy Installation and Use: The illustration of each interface is printed on the protective plate, making it easy to install and use even without instructions. Small size: 4.72 in*3.94 in*0.7 in, easy to carry;

Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bas

Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers

Excellent Audio Experience: Integrated with TDA3116D2 amplifier chip, 2.0 channel configuration, providing 100W output power for each left and right channel, creating an immersive audio experience..
Two Input Methods: Supports Bluetooth 5.0 version for higher transmission efficiency and longer distance. Also supports 3.5MM AUX input for audio signals..
Safety Protection: The amplifier board features overheat protection, reverse connection protection, short circuit protection, and over-voltage and under-voltage protection. Recommended power supply is DC12-24V/5A or above..
Bass and Treble Control: Independent bass and treble control knobs, easily adjust the volume for a cinema-like audio experience. Suitable for 20-100W, 4-8Ω speakers, easily compatible with various speaker specifications..
After-Sales Service: Customer satisfaction is our service tenet. If you have any questions about the product, please feel free to contact us, and we will provide you with a 100% satisfactory

Hosyond ZK-1002T 100W+100W Bluetooth Amplifier Board with Treble and Bass Control 2.0 Channel Stereo

Hosyond ZK-1002T 100W+100W Bluetooth Amplifier Board with Treble and Bass Control 2.0 Channel Stereo AMP Board for DIY Passive Speakers Home Theater

【Audio Power Amplifier Board】ZK-1002T with 100W+100W power output and Bluetooth 5.0 wireless connection function, Bluetooth+AUX input, 2.0 channel stereo output, just a little sound distortion. Treble and Bass control. More functions on the APP waiting for you to discover. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected.
【Perfect Sound Quality Experience】The audio power subwoofer amplifier module with powerful audio chip, AM interference suppression function, shielding power inductance, low noise front stage operational amplifier, clear highs and deep lows, as well as a mix of highs and lows, let you enjoy a more perfect sound quality experience.
【Treble and Bass Adjustment】This 1002T digital Amp board with independent treble and bass adjustment buttons,you can directly adjust the treble and bass through the module, without using the player or speaker. For those with more demanding music sound effects, they can adjust the treble and bass buttons to adjust the sound effects to suit their style.
【With Protective Function】This Bluetooth Amp module is designed with over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection, with case to protective it.
【What You Get and Installation】Packaging in addition to the amplifier module, also comes with a protective panel and screws, screwdriver, easy to install. But the package does not include the power cord and power supply, you can according to their own needs, buy DC12-24V power adapter

ZK-1002T Bluetooth Amplifier Board 2.0CH 100W*2 Mini Audio AMP with Treble and Bass Control, BT and 

ZK-1002T Bluetooth Amplifier Board 2.0CH 100W*2 Mini Audio AMP with Treble and Bass Control, BT and AUX Inputs, DC 9-24V Stereo AMP Module for Home Speakers, Update Version APP Control

TPA3116D2 HIFI chip solution: with AM interference suppression function, 2.1 channel stereo output 50W+50W+100W, to ensure continuous serial high-power operation, THD ≤0.1%. Using high-quality filter inductors, the sound is full and clear..
Bluetooth and AUX audio input: Bluetooth 5.0 version, higher transmission efficiency and longer distance. If your playback device does not have Bluetooth, you can also input audio signals through the 3.5MM jack(Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected)..
Safety protection: The power amplifier board has overheat protection, reverse connection protection, circuit breaker protection, overvoltage and undervoltage protection; wide voltage input DC: 12-24V..
Features copper DC connectors and insulated terminals. It can withstand high current, does not generate heat, and does not damage the wire. The free DC head lead is compatible with the input power interface of this product, even if you don't have a DC head adapter, you can easily wire it..
Independent high and low bass control knobs, easy to adjust the volume, allowing you to experience theater-like sound effects. With its excellent performance and comprehensive cost performance, TDA3116D2 is widely used in home theaters, square speakers, etc.

ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board TPA3116D2 HiFi Treble and B

ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board TPA3116D2 HiFi Treble and Bass Control Stereo Digital Audio Amp Board for Home Theater DIY Speakers

2.1 Channel Power Amplifier Module : JR-MT21 audio power amplifier with mini size 9 x 9.3 x 2.2 cm /3.54 x 3.66 x 0.87 inch, but Powerful, Dual channel stereo output power 50*2+100W, suitable for 4-8Ω speakers, It is recommended to use 50-100W speakers for the best effect..
HiFi Audio Amplifier Board : JR-MT21 Mini Bluetooth audio power amplifier module is a 2.1 channel amp, it can contact two passive speaker(50*2+100W), DC12-24V (5.5X2.1mm) . distortion rate below 0.3%, low latency..
Bluetooth 5.0 Inputs: The Bluetooth power amplifier board with 2 kind of inputs: AUX and Bluetooth inputs, the upgrade large chips support Bluetooth 5.0, low latency, The range of audio devices (smartphones, tablets, laptops, etc.) with Bluetooth connectivity is 15m/49ft. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected..
Details and Quality: Amplifier circuit board with 4 groups of red and gray ring inductors and 684 film capacitors, with low loss, high bandwidth, high fidelity characteristics; 2 pieces of chips have AM interference suppression, to ensure that the high-power output, and low distortion (less than 0.3%), the electrolytic capacitor array filtering effect is very good, ensure the output of the sound quality is more pure. They are specially customized for the JR-MT21 digital amplifier..
Multiple Protections and Safety: This JR-MT21 Bluetooth amp module with multiple protections ensure safety in use, designed with over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection, with case to protective it..
Notice: JR-MT21 adaptive 30-200W, 4-8 ohm speakers. input voltage is DC 12V-24V/5A above, the speaker power, resistance and voltage relationships are as follows: 20W*2@12V,8 ohm; 35W*2@12V,4 ohm. 35W*2@19V,8 ohm; 60W*2@19V,4 ohm. 50W*2@24V,8 ohm; 100W*2@24V,4 ohm

2.1 Channel Bluetooth 5.0 Audio Power Amplifier Board, JR-MT21 50 * 2+100W HiFi Subwoofer Audio AMP 

2.1 Channel Bluetooth 5.0 Audio Power Amplifier Board, JR-MT21 50 * 2+100W HiFi Subwoofer Audio AMP with Treble and Bass Control BT and AUX Inputs Module, DC12-24V Stereo AMP Module for DIY Speakers.

【TPA3116D2 HIFI CHIP】TPA3116D2 HIFI Chip Solution: Stereo Dual-channel Output to Ensure Continuous Serial High-power Operation, THD ≤0.1%. Wide Voltage Input DC: 12-24V;.
【MULTIPLE INPUT METHOD】The TB21 PROhas multiple input methods such as Bluetooth input, AUX input, and USB drive input. The vast majority of devices can be used, such as mobile phones, televisions, laptops, etc., making it easy to connect and use..
【TREBLE & BASS CONTROL】If you are tired of an amplifier with only one volume knob, then you feel right, because you have further requirements for audio. By adjusting the high and low frequency knobs of the power amplifier board, you can make the sound more layered and make the bass more shocking..
【PROTECTION FUNCTION】TB21 PROBluetooth power amplifier board has multiple protection mechanisms to ensure its safe operation. It has short-circuit protection, over-current, over-heat, and anti-reverse protection. When an overload occurs, the device reports the fault condition to the processor to protect itself from damage.
【7 * 24 Hours After-sales Service】 Paying Attention To Customer Experience And Satisfying Customers Is Our Service Tenet. If You Have Any Questions About The Product, or The Product Has Quality Problems, Please Contact Us At Any Time, We Will Give You A Satisfactory Answer

Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 50W×2+100W, 12V-24V Audio Power Amplifier

Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 50W×2+100W, 12V-24V Audio Power Amplifier Module with Treble and Bass Control (ZK-MT21)

TPA3116D2 HIFI chip solution: Stereo dual-channel output, ensuring continuous high-power operation, THD≤0.1%. Wide voltage input DC: 9-24V..
Bass and treble control: Independent bass and treble control knobs give you a cinema-like audio experience. Suitable for 10-50W, 4-8Ω speakers, easily compatible with various passive speakers..
Safety protection: The power amplifier board has overheating protection, reverse connection protection, short circuit protection, overvoltage and undervoltage protection and other functions..
BT and AUX function: BT5.0 version, longer transmission distance. In an open environment, the transmission distance can reach 49 feet. You can also input audio signals through a 3.5MM headphone plug..
After-sales service: Customer satisfaction is our service tenet. If you have any questions about the product, please feel free to contact us, we will provide you with 100% satisfactory service.

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