MT21 TB21 2.1/2.0 Bluetooth 5.0/5.1 Subwoofer Amplifier Board 50Wx2+100W Power Audio Stereo Amplifier Board B AMP AUX

ZK-MT21：ZK-MT21 2x50W+100W 2.1 Subwoofer Dial Power Amplifier Board AUX 12V 24V Audio Stereo Bluetooth-compatible 5.0 Ba Amp for Home T SpeakerFeature:The Bluetooth-compatible audio power amplifier module has 2.1 s and the maximum output power is 2X50W+100W.It has two audio input modes, AUX and Bluetooth-compatible, and a two-in-one power amplifier board. Bluetooth-compatible5.0, higher nsmiion efficiency, longer nsmiion distanceIt has short-circuit protection, over-current, over-heating, and anti-re protection to prevent total failure. When an overload occurs, the device reports the fault condition to the proceor to protect its from damageIt adopts copper DC connectors and barrier terminals. It can withstand high current without heating or dam wires.Claic appearance multi-function main knob. The main knob adopts a rotary that is only used in high-end power amplifiers, which realizes 360-degree steple tuning and a smooth one-key start and stop. The operation is simple and convenient by long preing the switch.With ba, , subwoofer frequency and volume control, you can easily adjust the volume and enjoy the music tone you want. It is widely used in shopping malls, home ts, speakers, etc.Specification:Product name: 2.1 Bluetooth-compatible audio power amplifier moduleProduct model: ZK-MT21Bluetooth-compatible version: 5.0 (bstructed, 15 meters)Input sensitivity: 500mVInput method: AUX+ Bluetooth-compatibleNumber of s: 2.1 sPower amplifier chip: Domestic power amplifier chipAdapter power supply: above DC12-24V/5A (24V battery pack is not allowed)Adapted speakers: 20-100W, 4-8QOutput power: left and right s <50W; subwoofer <100WProtection mechanism: Anti-re connection, overheating, overcurrent, short circuit protectionProduct size: 93mm*90mm*22mmProduct weight: about 130gNotice:The product can be connected with an external , but does not include an and an base, please purchase it separately.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 e sure that the power of the adapted power supply is greater than the actual working power of the amplifier!!!Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.YS-MT21S ：2.1 Audio Power Amplifier Board Bluetooth-compatible 5.1 C673E Power Amplifier Board Module Supports Phone APP ControlFeature:1. Efficient Cla-D Audio Amplifier: With low distortion and anti-burst noise, the C673E delivers nsparent sound quality with strong drive capability. It includes over-current protection, short-circuit protection, and overheating protection to prevent damage in abnormal operating conditions.2. Bluetooth-compatible 5.1 Audio Amplifier Module: The C673E offers 2.1 and 3- stereo output with a maximum output power of 50W per (left and right) and 100W for the subwoofer. High and low frequencies can be independently adjusted, providing pure Hi-Fi sound quality with crisp highs, warm midrange, and powerful ba.3. High-end Rotary : The main knob features a smooth, high-end rotary that allows for 360-degree infinite tuning. One-on start/stop and easy power on/off operation provide an effortle user experience.4. YS Audio-APP Control: The C673E supports YS Audio-APP control, enabling users to customize the Bluetooth-compatible name and paword, switch off/on prompts, and visualize playback modes. Volume, effects, ck control, play/pause, and playback mode can all be controlled through the app.5. Multe Audio Inputs: The C673E supports multe audio inputs, including Bluetooth-compatible 5.1, AUX, USB sound card, and U-disk. U-disk file syst must be formatted as FAT32 and not exceed 32GB. Its dedicated heat-conductive silicon paste and large-area heat sink, the C673E ensures high performance while maintaining efficient and effective cooling.Specification:Certification: CEOrigin: Mainland ChinaBluetooth-compatible version: 5.1Number of s: 2.1 s (left and right s+subwoofer)Volume adjustment: high-end knob adjustment, smooth touchPower amplifier chip: domestic power amplifier chip C673EAdapted power supply: DC12~24 V/8A or above (cannot be connected to 24V battery pack) Adapted speaker: 20~100W, 4~8QInput sensitivity: 500mVInput method: Bluetooth-compatible+AUX+USB drive+USB sound cardOutput power: left and right s<50W; Subwoofer<100WProtection mechanism: anti re connection, overheating, overcurrent, short circuit protectionAdapted speakers: left and right s 20-50W, 4-8 s, subwoofer 20-100W, 4-8 sProduct size: About 96 * 94 * 23mm/3.77 * 3.70 * 0.91inchProduct weight: About 180gAttention: The product can be connected to an external , but does not include the and base. Please purchase separately.Kind reminder: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.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.YS-0L：2.1 3 Audio Stereo Subwoofer Amplifier Board 50WX2 100W C673E Amplifier Board Bluetooth-compatible 5.1 DIY Home AudioFeature:1. High-fidelity Audio Performance: C673E in thisaudio stereo subwoofer amplifier board features an efficient Cla D audio power amplifier circuit that delivers crisp, clear sound with low distortion and no pops or hies.2. Powerful 3- Output: With a total power output of 200W (50W x 2 for left/right s and 100W for subwoofer), this audio amplifier module can drive even large speakers and deliver deep ba.3. Intuitive Controls: The main knob of this amplifier board uses a high-end rotary for smooth, precise adjustments of volume, tone, and balance, while the one-on power switch is easy to use.4. App-controlled Convenience: Thispower ba amplifier board supports YS Audio app control.You can download the YS Audio app on your for iOS or Android device to acce advanced settings such as Bluetooth pairing, device renaming, audio effects, and EQ presets.5. Efficient Cooling System: Thanks to the use of large heat sinks and copper foil layers, the amplifier board stays cool during prolonged use and ensures reliable performance under any load.Specification:Certification: CEOrigin: Mainland ChinaBluetooth-compatible version: 5.1Audio : 2.1 sPower supply: DC5-26V/10A or aboveInput method: Bluetooth-compatible+AUX+USB drive+USB sound cardAudio output: left and right s+subwoofer+3.5mm interface stereo outputVolume adjustment: high-end knob adjustment, smooth touchFrequency range: 20HZ-30KHZSignal to noise ratio: 92dBOutput power: 50W * 2 (left and right s)+100W (subwoofer) box (left and right s) compatible speaker: 10W-50W/4 Ω -8 ΩSubwoofer (subwoofer) adapter speaker: 20W-100W/4 Ω -8 ΩProtection mechanism: static electricity protection, overcurrent protection, short circuit protection, overheating protectionProduct size: About 95 * 88 * 25mm/3.74 * 3.46 * 0.98inchProduct weight: 155 gramsAttention: The impedance of the adapter horn should be 4 s, and the power supply should not exceed 12V; The impedance of the adapter horn is 8 s, and the power supply cannot exceed 24VNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.YS-XPS：YS-XPS High-power Audio Module 2x150W TDA7498E 2.0 Dual Stereo Bluetooth-compatible 5.0 DIY Home Audio ModificationFeature:1. Audio Amplification: The TDA7498E chip provides high-quality sound amplification with low distortion and noise levels, ensuring stability and clarity even at high power output.2. Multe Protection Measures: The chip comes with various protective measures such as overheating protection, under-voltage protection, and short-circuit protection, safeguarding the system against damage and malfunction.3. Bluetooth-compatible 5.0 Connectivity: With a nsmiion range of up to 15 meters (bstructed), the product supports stereo output with an output power of 150W*2 (left and right s) and delivers pure audio quality with clear , warm midrange, and powerful ba.4. High-end Volume Control Knob: The main knob uses a high-end rotary that achieves 360-degree infinite adjustment, allowing you to adjust the volume smoothly and easily. The VOL knob adjusts the overall volume, turning right increases it while turning left decreases it, and the one-on startup/shutdown adds to the convenience.5. Enhanced Cooling System: The product a large-area heat sink (463715mm) attached with special thermal silicon paste for efficient heat diipation. The copper-clad heat diipation area is doubled, ensuring high-performance operation and preventing overheating iues. The product can be connected to various devices, including smartphones, tablets, laptops, MP3 players, TVs, and both paive and active speakers.Specification:Certification: CEOrigin: Mainland ChinaProduct model: YS-XPSBluetooth-compatible version: 5.0 (bstructed, 15 meters)Input method: AUX+Bluetooth-compatibleNumber of s: 2.0 s (left +right )Adapted power supply: DC12~32V (undervoltage protection below 9V, can also support 12V power supply)Adapted speaker: 30-200w, 4-8 sOutput power: left and right s ≤ 150WProtection mechanism: anti re connection, undervoltage, overheating, overcurrent, short circuit protectionProduct size: About 110x58x25mm/4.33x2.28x0.98inchProduct weight: net weight 110gReminder:Only when the audio signal input is large enough and the power supply voltage/current is large enough 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!How to choose a speaker?Regarding the type of speaker: Commonly used speakers are generally 4-8 s, and can be used with left and right speakers. Full frequency speakers to high frequency speakers need to be connected, with a power range of 30W-200W. If your speaker has a low power, such as between 20W-50W, it can also be used. You need to reduce the power supply voltage to prevent ing the speaker when it is loud, such as choosing a power supply below 15V. The higher the selected voltage, the greater the sound or power that can be output. The speaker power should not exceed 200W, otherwise it will affect the sound quality.How to adjust the total volume?The VOL knob adjusts the total volume. The total volume of right-handed rotation increases, while the total volume of left-handed rotation decreases.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.YS-XPSM：YS-XPSM Audio Power Amplifier Board Module 150Wx2 TDA7498E Ba Adjustment Power Amplifier Board Bluetooth-compatible 5.0 Dual Heat SinkFeature:1. Ba Adjustment: The left and right high/low tones can be adjusted using the B and knobs. The B knob controls the low frequency, with clockwise rotation increasing the ba and counterclockwise rotation reducing the ba. The knob controls the high frequency, with clockwise rotation increasing the and counterclockwise rotation reducing the .2. TDA7498E Chip: This chip supports high-fidelity audio amplification, with low distortion and noise levels, ensuring stable sound quality and clarity even at high output power levels. It also includes multe protection measures such as overheat protection, undervoltage protection, and short-circuit protection to prevent system damage and failure.3. Bluetooth-compatible 5.0 Amplifier: With a nsmiion distance of up to 15 meters (bstructed), this amplifier supports 2.0- stereo output, with 150W*2 (left and right ) pure audiophile sound quality. The high frequencies are crisp and clear, the middle-range is gentle and delicate, and the ba is powerful and impactful. The main knob uses a high-end amplifier's rotary , allowing for 360-degree infinite tone adjustment. It also includes high/low tone adjustment knobs and a volume/on-off knob, all with smooth operation and easy one-on start/stop function.4. Audio Inputs: The audio amplifier module features two types of audio inputs: Bluetooth-compatible input and AUX audio input. In Bluetooth-compatible mode, if an audio cable is inserted, it will automatically switch to audio input mode, with Bluetooth-compatible mode having the lowest priority.5. Cooling Mechanism: The module includes a large-area heat sink (463715mm) that is specially designed with thermal conductive silicon paste, which adheres closely to the copper-clad heat diipation of the shell. This doubles the heat diipation area, ensuring high-power and high-performance operation. The Bluetooth-compatible function can connect to smartphones, tablets, laptops, AUX devices such as MP3 players, and more. It can be connected to both paive and active speakers.Specification:Product model: YS-XPSMBluetooth-compatible version: 5.0 (bstructed, 15 meters)Input method: AUX+Bluetooth-compatibleNumber of s: 2.0 s (left +right )Adapted power supply: DC12~32V (undervoltage protection below 9V, can also support 12V power supply)Adapted speaker: 30-200w, 4-8 sOutput power: left and right s ≤ 150WProtection mechanism: anti re connection, undervoltage, overheating, overcurrent, short circuit protectionProduct size: 119x70x21mm/4.68x2.75x0.82inchProduct weight: net weight 135gReminder:Only when the audio signal input is large enough and the power supply voltage/current is large enough 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!How to choose a speaker?Regarding the type of speaker: Commonly used speakers are generally 4-8 s, and can be used with left and right speakers. Full frequency speakers or middle to high frequency speakers need to be connected, with a power range of 30W-200W. If your speaker has a low power, such as between 20W-50W, it can also be used. You need to reduce the power supply voltage to prevent ing the speaker when it is loud, such as choosing a power supply below 15V. The higher the selected voltage, the greater the sound or power that can be output. The speaker power should not exceed 200W, otherwise it will affect the sound quality.How to adjust the total volume?The VOL knob adjusts the total volume. The total volume of right-handed rotation increases, while the total volume of left-handed rotation decreases.How to adjust the high and low frequencies of the left and right s?The B knob is used to control the ba, with right hand ba enhanced and left hand ba attenuated. When the knob is in the middle position, there is no increase or decrease in ba. The knob controls the , with the right enhanced and the left attenuated. When the knob is in the middle position, there is no increase or decrease in .Attention: Adjusting the and total volume to maximum simultaneously can easily cause amplifier protection and sound jang. Turn down the or turn the volume knob on the right to the left to reduce the total volume.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.ZK-TB21：ZK-TB21 2x50W+100W Stereo Audio Receiver Amplifier Board C673E/TPA3116D2 Chip Speaker DIY Module With Filter Bluetooth-compatible 5.0Feature:1. Two Chip Options: Domestic chip C673E, efficient, good distortion and anti popping, nsparent sound quality, and strong driving force; ed chip solution TPA3776D2 with AM interference suppreion function; The output has a filter, pure fever sound quality, and low requirements for speakers2. Bluetooth-compatible Audio Amplifier Module: 2.1 s, maximum output power 2X50W+100W, with two audio input methods: AUX and Bluetooth-compatible, and a 2-in-1 amplifier board. Bluetooth-compatible 5.0, higher nsmiion efficiency and longer nsmiion distance3. Knob Adjustment: The main knob adopts a rotary only used in high-end power amplifiers, achieving 360 degree steple tuning. Smooth touch, one click start stop, long pre on/off operation is simple and convenient; Easily adjust the volume and enjoy the music sound you want. Widely used in shopping malls, home ts, speakers, etc4. Multe Protection: Equipped with short circuit protection, overcurrent, overheating, and anti re connection protection to prevent comprehensive failure. When an overload occurs, the device reports the fault situation to the proceor to protect its from damage. Copper DC connectors and barrier terminals are used. Can withstand high currents, does not generate heat, and does not damage wires.5. Heat Diipation Mechanism: Special 50x25x10mm large-area heat diipation fins are used, and copper coating is tightly attached to the shell for heat diipation. The heat diipation area is multied to ensure the high performance operation of the product with sufficient power.Specification:Origin: Mainland ChinaPower amplifier chip: TPA3116D2, C673E (optional)TPA3116D2 chip: with filter and AM interference suppreion functionBluetooth-compatible version: 5.0 (bstructed, 10 meters)Input sensitivity: 500mVInput method: AUX+Bluetooth-compatibleNumber of s: 2.1 sAdapted power supply: DC12~24V/5A or above (higher voltage, higher output power) Adapted speaker: 20~100W, 4~8 ΩOutput power: Left and right s ≤ 50W; Subwoofer ≤ 100WProtection mechanism: overvoltage, undervoltage, overheating, DC , short circuit protectionHeat sink size: About 50x25x10mm/1.96x0.98x0.39inchAmplifier board size: About 118x100x22mm/4.64x3.93x0.86inchProduct weight: About 190gTip: 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, and the smaller the horn impedance, 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.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.ZK-MT21：1 X Power Amplifier Board1 X Acceory PackYS-MT21S ：1 x DIY power amplifier module with acceory packageYS-0L :1 x DIY Amplifier BoardYS-XPS ：1 x Audio Power AmplifierYS-XPSM：1 x amplifier board kitZK-TB21 ：1 x Audio Amplifier Board