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Logitech G Yeti USB Mic
USB condenser with four polar patterns (cardioid / bidirectional / omni / stereo). Streaming staple.
Out of stockLogitech G335
Wired stereo gaming headset, 240g lightweight, flip-to-mute mic.
Out of stockGold AP-55 TPA3116D2 2×50W Bluetooth Stereo Digital Amplifier Board with USB, TF Card, FM & Remote
[Amplifier Board] Gold AP-55 TPA3116D2 2×50W Bluetooth Stereo Digital Amplifier Board with USB, TF Card, FM & Remote The Gold AP-55 is a compact Class-D stereo digital audio amplifier board based on the TPA3116D2 amplifier IC, designed for DIY Bluetooth speakers, home audio systems, portable speakers, bookshelf speakers, multimedia systems, and custom audio projects. Available product listings consistently identify the AP-55 as a dual-channel 50W + 50W amplifier, with a DC input range around 8–24V or 12–24V depending on the listing/version. The AP-55 combines the power amplifier with a multimedia player supporting Bluetooth 5.0, USB, TF/SD card, FM radio and AUX input. The Bluetooth device name is reported as GD-82EM, while the FM tuner covers 87.5–108.0MHz. It also includes an infrared remote control and a digital display for convenient operation. The TPA3116D2 Class-D amplifier provides efficient stereo amplification, making the board suitable for building compact but powerful audio systems. One detailed listing specifies support for 4Ω–8Ω speakers, with the commonly advertised maximum output of 50W per channel. ⭐ Key Features Gold AP-55 amplifier module TPA3116D2 Class-D amplifier IC 50W + 50W dual-channel stereo output Supports 4Ω–8Ω speakers Bluetooth 5.0 wireless audio Bluetooth device name: GD-82EM Built-in USB music player Built-in TF / SD card player Built-in FM radio FM frequency range 87.5–108.0MHz 3.5mm AUX input Infrared remote control Digital display Supports MP3 / WMA / WAV Power-off memory function Remembers the previous song and volume Compact design for DIY speaker projects High-efficiency Class-D amplification 📋 Technical Specifications Product Type: Stereo Class-D Digital Amplifier Board Model: Gold AP-55 Amplifier IC: TPA3116D2 Amplifier Class: Class-D Number of Channels: 2 / Stereo Output Power: 50W + 50W Maximum Total Output: 100W Speaker Impedance: 4Ω–8Ω Input Voltage: DC 8–24V (some listings specify 12–24V; verify the exact board version before use) Bluetooth Version: 5.0 Bluetooth Name: GD-82EM Bluetooth Range: Up to approximately 10–15m under suitable conditions Audio Formats: MP3 / WMA / WAV USB Support: Yes TF/SD Card Support: Yes FM Radio: Yes FM Frequency: 87.5–108.0MHz AUX Input: 3.5mm / Wired Audio Input Remote Control: IR Remote Remote Range: Approximately 4–7m Display: Digital Display Power-Off Memory: Yes Memory Function: Last song and volume Audio Input Modes: Bluetooth / USB / TF Card / FM / AUX Output: Dual-Channel Stereo Efficiency: Greater than 90% according to one detailed listing SNR: Approximately 102dB according to one detailed listing Distortion: Below 0.1% at normal listening levels according to one detailed listing Board Size: Approximately 70 × 50 × 20mm with shell, according to one listing 🎵 Audio & Playback Functions The AP-55 can switch between Bluetooth, USB, TF/SD Card, FM Radio and AUX sources. When Bluetooth mode is selected, users can pair a phone or other compatible device with GD-82EM. USB and TF/SD cards can be used for local music playback, while AUX provides a wired audio input. 📻 FM Radio The built-in FM tuner supports the 87.5–108.0MHz broadcast band. FM stations can be searched and selected using the onboard controls or remote control. 🎛️ Controls & Remote The module provides controls for functions such as previous track, next track, volume up, volume down, play/pause, mode selection and FM station selection. The infrared remote provides additional wireless control of playback, volume, mode and other supported functions. 🔧 Applications DIY Bluetooth Speakers High-Power Bluetooth Speaker Projects Portable Speaker Systems Bookshelf Speaker Systems Home Audio Projects Multimedia Speaker Systems USB MP3 Speaker Systems TF/SD Card Music Players FM Radio Speaker Projects Car Audio Projects Custom Wooden Speaker Cabinets Desktop Audio Systems Electronics DIY Projects 🛠️ Installation Connect a suitable DC power supply within the specified voltage range and observe the correct polarity. Connect the left and right speaker outputs to compatible 4Ω–8Ω speakers. Select Bluetooth, USB, TF/SD, FM or AUX according to the desired audio source. For maximum advertised output, a suitable 24V high-current power supply is recommended by one vendor; at lower supply voltages, available output power will be lower. 📦 Package Includes 1 × Gold AP-55 TPA3116D2 2×50W Bluetooth Amplifier Board 1 × IR Remote Control 1 × Required Connecting Wires/Cables (package contents may vary by seller/version) ⚠️ Precautions Verify the exact input voltage requirement of your AP-55 version before powering it. Do not exceed 24V DC where the board specification limits input to 24V. Check power polarity carefully before connection. Use speakers with a compatible 4Ω–8Ω impedance. Do not short-circuit the speaker output terminals. Ensure adequate ventilation during high-power operation. Use a suitable high-current power supply for high-output operation. Do not connect the speaker outputs together or directly to ground. Keep the board away from moisture and conductive materials. Incorrect wiring or excessive voltage can permanently damage the amplifier IC.
Portable USB Bluetooth Audio Music Receiver Dongle Adapter – Wireless Audio Receiver
[Audio Receiver] The Portable USB Bluetooth Audio Music Receiver Dongle Adapter instantly converts any car stereo, home speaker, PC speakers, or audio system into a wireless Bluetooth-enabled music receiver. Simply plug the dongle into a USB power source, connect its audio output to AUX, and enjoy seamless wireless music streaming from your smartphone, tablet, or laptop. This compact Bluetooth receiver delivers crisp, high-quality audio with stable transmission—making it perfect for cars without built-in Bluetooth, wired speakers, home audio systems, and portable sound setups. It supports all Bluetooth-enabled devices and offers quick pairing, low power consumption, and wide compatibility. Whether you're upgrading your car audio or converting old speakers into wireless ones, this USB Bluetooth receiver provides an easy and affordable solution. ✅ Features Convert any speaker or car stereo into a Bluetooth audio receiver Provides high-quality wireless music streaming from mobile, tablet, or laptop USB-powered – plug into car charger, power bank, or USB port Stable Bluetooth connection with fast pairing Compatible with car stereos, home speakers, multimedia systems, and amplifiers Ultra-compact, lightweight, and easy to carry Supports all major Bluetooth audio devices No drivers required – plug & play operation **** 3.5mm jack or cable not included***** 📘 Specifications Device Type: USB Bluetooth Audio Receiver Bluetooth Version: Standard high-quality audio support Input Power: USB 5V Output: 3.5mm AUX audio Transmission Distance: Approx. 8–10 meters Compatibility: Android, iOS, laptops, tablets, car stereos, speakers, amplifiers Usage: Car audio upgrade, home audio wireless streaming, mobile speaker enhancement Design: Compact & portable
ZK-MT21 bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Amplifier Tone Board Bass AMP AUX
[Amplifier Board] ZK-MT21 2.1 Channel Bluetooth 5.0 Audio Amplifier Module – 50W × 2 + 100W Subwoofer The ZK-MT21 2.1 Channel Bluetooth Audio Amplifier Module is a compact high-power stereo amplifier board designed for DIY Bluetooth speaker and home audio projects. It supports Bluetooth 5.0 and AUX audio input and provides dedicated left, right and subwoofer channels with adjustable volume, bass, treble, subwoofer volume and subwoofer frequency controls. With a suitable DC power supply and properly matched speakers, the module can deliver up to 50W + 50W for the left/right channels and up to 100W for the subwoofer channel. The board includes protection against reverse connection, overheating, overcurrent and short circuit. ⭐ Key Features Model: ZK-MT21 2.1 channel stereo audio amplifier Bluetooth 5.0 wireless audio input Bluetooth transmission distance up to approximately 15 meters under suitable conditions AUX wired audio input Left + Right + Subwoofer output Output up to 50W × 2 + 100W subwoofer Supports 4Ω–8Ω speakers Adjustable main volume Adjustable bass and treble for left/right channels Adjustable subwoofer volume Adjustable subwoofer frequency Subwoofer frequency adjustment range 20Hz–200Hz Reverse-polarity protection Overheat protection Overcurrent protection Short-circuit protection Compact amplifier board design Suitable for DIY Bluetooth speaker projects 📋 Technical Specifications Product Name: 2.1 Channel Audio Amplifier Module Model: ZK-MT21 Bluetooth Version: 5.0 Bluetooth Range: Approximately 15m Bluetooth Shielding: No shielding Audio Input: AUX + Bluetooth Channel: 2.1 Input Sensitivity: 500mV Amplifier Chip Solution: Domestic power amplifier chip Power Supply: DC 12–24V Recommended Supply Current: 5A or above Left Channel Output: <50W Right Channel Output: <50W Subwoofer Output: <100W Total Configuration: 50W × 2 + 100W Compatible Speaker Impedance: 4–8Ω Recommended Speaker Power: 20–100W Subwoofer Frequency Adjustment: 20Hz–200Hz Product Dimensions: 93 × 90 × 22mm Package Weight: Approximately 185g Protection: Reverse connection, overheat, overcurrent and short circuit ⚠️ Power Supply Warning:Do not connect this module directly to a 24V battery pack. Use a suitable regulated DC power supply as specified for the module. 🎛️ Control Functions MAIN-VOLUME: Controls the overall volume of the left, right and subwoofer channels. R&L CHANNEL-BASS: Adjusts bass level for the left and right channels. R&L CHANNEL-TREBLE: Adjusts treble level for the left and right channels. SUBWOOFER-VOLUME: Controls the subwoofer volume. SUBWOOFER-FREQ: Adjusts the subwoofer cutoff frequency from approximately 20Hz to 200Hz. 🔊 Speaker Selection Left and right channels can be connected to 4Ω–8Ω full-range or mid/high-frequency speakers. Recommended speaker power is 20W–100W. The subwoofer output should be connected to a suitable subwoofer speaker, not a regular full-range speaker. The subwoofer should have suitable low-frequency performance, with the source information recommending a frequency capability of at least 50Hz. Speaker impedance and power should be matched correctly with the amplifier. 🔌 Power Supply Selection The power supply is important for achieving proper amplifier performance and sound quality. A power supply with excessive ripple may increase background noise. Recommended supply: 18V / 19V / 24V with current above 5A Lower-voltage or lower-current supplies can be used, but available output power will be reduced. Insufficient supply current can cause voltage drop, abnormal operation or poor sound quality. If the amplifier is operated near maximum volume, an inadequate power supply may result in distortion. The power supply should have sufficient capacity for the actual amplifier load. Higher supply voltage can provide greater available output power within the module's specified operating range. 📱 Bluetooth & AUX Input The ZK-MT21 provides two audio input methods: Bluetooth Bluetooth 5.0 wireless audio input Bluetooth is the preferred input mode according to the supplied product information. Bluetooth supports automatic reconnection. Once Bluetooth is successfully connected, the module operates in Bluetooth mode. AUX Connect an external audio source through the AUX input. When using AUX, ensure the Bluetooth connection has been disconnected if necessary. 🔧 Applications DIY Bluetooth speakers 2.1 channel speaker systems Home audio projects Portable audio systems Subwoofer amplifier projects Custom speaker cabinets Desktop speaker systems Multimedia speaker systems Electronics and audio DIY projects Replacement/custom amplifier systems 🛠️ Installation & Usage Connect a suitable DC 12–24V power supply to the amplifier module. Connect the left and right speakers to their respective output terminals. Connect a suitable subwoofer to the subwoofer output. Ensure the speaker impedance is within the supported 4–8Ω range. Connect the audio source through Bluetooth or AUX. Adjust the main volume, bass, treble, subwoofer volume and frequency according to your requirements. Start with a low volume and gradually increase it. Ensure adequate ventilation and heat dissipation during high-power operation. ⚠️ Important Precautions Do not connect directly to a 24V battery pack. Use a suitable regulated DC power supply. Do not reverse the power supply polarity. Do not short-circuit the speaker outputs. Do not exceed the recommended speaker power and impedance. Ensure the power supply can provide sufficient current. Insufficient power may cause distortion or abnormal operation. Excessive load can cause the amplifier to heat up and activate thermal protection. Provide adequate ventilation during high-power operation. If distortion occurs at high volume, reduce the volume or use a more suitable power supply. The amplifier's actual output depends on the power supply, speaker impedance, audio input and overall system configuration. 📦 Package Includes 1 × ZK-MT21 Bluetooth 5.0 2.1 Channel Audio Amplifier Module
TPA3116D2 XH-M543 120W Dual Channel High Power Original Digital Power Amplifier Board
[Amplifier Board] Build your own music system with 120 watts of stereo output. TPA3116D2 XH-M548 Dual Channel 120W Digital Power Amplifier Board is newly designed digital audio amplifier board with fine quality is practical to install and use also has good performance. It features high-efficiency class D audio power amplifier with the latest and original TPA3116D2 core technology the BTL bridge circuit is more efficient than before. This product uses the double power supply transformer with a dynamic power supply range from 12V to 24V with high efficiency small quiescent current. Additionally, it is equipped with Perfect protection functions like overvoltage protection and output current limit. Features: A strong TPA3116D2 chip is a digital power amplifier chip, with low idle loss characteristics, makes it work well and quickly. Onboard, front-facing IC to improve the input sensitivity, high-definition sound quality. It can be used for car vehicle computer speaker, family audio and video, and empty square. This product has the characteristics of loud sound, the capacitance is large, excellent sound quality. There is no solder joint on the back of the circuit board, the chip capacitors, and the solder board together, so there is no possibility of short circuit. Package Includes: 1 x TPA3116D2 XH-M543 120W Dual Channel High Power Digital Power Amplifier Board
Out of stockTPA3116D2 Audio Dual Channel Stereo Digital Amplifier Board 80W+80W
[Amplifier Board] This is TPA3116D2 Audio Dual Channel Stereo Digital Amplifier Board 80W*2. The TPA3116D2 Audio Dual Channel Stereo Digital Amplifier Board is a popular and versatile amplifier module known for its performance and efficiency. Here are its key characteristics: Amplification: Capable of delivering 80 watts per channel (80W*2) in a dual-channel stereo configuration. Digital Amplifier: Utilizes digital amplification technology for high efficiency and reduced power dissipation compared to traditional analog amplifiers. Class-D Amplifier: Falls under Class-D amplifier topology, which offers high efficiency and low heat generation. Stereo Configuration: Provides two independent channels for left and right audio, ideal for stereo sound setups. Audio Quality: Known for delivering clear and high-quality audio output with minimal distortion. Wide Input Voltage Range: Compatible with a wide range of input voltages, providing flexibility in power supply options. Protection Features: May include built-in protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown to safeguard the amplifier and connected speakers. Compact Design: Usually comes in a compact module or board form factor, suitable for integration into various audio systems or DIY projects. Applications: Commonly used in audio systems, home theaters, DIY speaker projects, and other audio amplification applications. When using the TPA3116D2 amplifier board, connect appropriate power supplies, and take necessary precautions to optimize its performance and protect connected equipment from potential damage. Features: Dual-channel stereo configuration Output power of 80 watts per channel (80W*2) Utilizes digital Class-D amplifier technology High efficiency with reduced power dissipation Clear and high-quality audio output Wide input voltage range compatibility Built-in protection features for safety Compact and easily integrable design Input impedance: 1KΩ Input impedance: 4-8Ω Amplifier Board Suitable for various audio applications and DIY projects Package Includes: 1 x TPA3116D2 Audio Dual Channel Stereo Digital Amplifier Board 80W+80W
TG113 Bluetooth Speaker Circuit Board Module
[Audio Receiver] TG113 Bluetooth Speaker Circuit Board Module This simple Music player Board is actually what you need when you are looking for making a music system or your home theatre. It is a very perfect and small size music player, which all the makers and hobbyists can use to design their music player device like an iPod. his module has some built-in features like Bluetooth, FM, USB, SD-Card Slot, Aux & FM along with a very small amplifier which can only drive the speaker of earphones or a very low watt speaker of .2 watt – 5 watt. But, it’s always advisable to use a good quality amplifier with this module which can drive the speaker of your requirements as there is a lot of variation in the wattage rating of speakers available in the market so its hard to predict the speaker of your choice will work with this module or not. Features: Output: Single channel Digital Audio Output Input:- USB/SD Card Slot/Bluetooth/FM/AUX. DIY speakers and modified audio/car rare weapon Support MP3/WMA/WAV/ format music Power Source: USB & Battery Battery supply voltage: 5V Features/Specs: New and improve microchip technology Working voltage: 3.7V-5V DC Inbuilt sound sensor or mic for recording purposes Support: mp3/Bluetooth/USB/aux/FM Push buttons for easy handling Excellent sound quality Widely used in portable speakers Can drive a normal speaker directly Length: 43 mm Width: 38 mm Height: 11.5 mm Weight: 8 gm Applications: Stereo Headphones Wired stereo headsets and headphones Portable Bluetooth Stereo Speakers Datasheet: Package Includes : 1 x TG113 Bluetooth Speaker Circuit Board Module Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
MH-M18 Wireless Bluetooth Audio Receiver Board Module BLT 4.2 MP3 Lossless Decode
[Audio Receiver] MH-M18 Wireless Bluetooth Audio Receiver Board Module – Bluetooth 4.2 MP3 Lossless Decoder The MH-M18 Wireless Bluetooth Audio Receiver Module is a compact, low-power Bluetooth 4.2 audio receiver designed to add wireless audio functionality to existing speakers, amplifiers, DIY audio systems and other projects. It supports stereo two-channel audio output and lossless decoding of WAV, WMA, FLAC, APE and MP3 formats. The module can operate from 3.7–5V and provides a transmission range of up to 20 meters under suitable conditions. ⭐ Key Features Bluetooth 4.2 wireless audio receiver Converts conventional speakers/amplifiers into Bluetooth-enabled audio systems Supports stereo dual-channel audio output Supports WAV/WMA/FLAC/APE/MP3 audio decoding Bluetooth automatic connection support Maximum transmission distance up to 20 meters in open/low-interference conditions Low power consumption Can be powered from a 3.7–4.2V lithium battery or 5V supply Compact PCB suitable for DIY projects Supports Bluetooth audio protocols including HFP, A2DP and AVRCP 📋 Technical Specifications Model: MH-M18 Bluetooth Version: Bluetooth 4.2 Operating Voltage: DC 3.7–5V Maximum Operating Current: Approximately 20mA Current in Deep Sleep: Approximately 3µA Transmission Distance: Up to 20 meters Sensitivity: -87dBm Operating Temperature: -40°C to +85°C Audio Output: Stereo, dual channel Supported Formats: WAV, WMA, FLAC, APE, MP3 Bluetooth Protocols: HFP V1.7, A2DP V1.2, AVRCP V1.5, AVCTP V1.2, AVDTP V1.2 Approx. Module Size: 23 × 16mm; some listings specify approximately 23 × 16.5 × 3mm depending on version. 🔧 Applications Convert old speakers into Bluetooth speakers DIY Bluetooth speaker projects DIY audio amplifiers Portable speaker projects Home audio systems Car audio Bluetooth upgrades Wireless audio receiver projects Custom audio and electronics projects 🛠️ Basic Connection VCC: Power input GND: Ground L: Left audio output R: Right audio output Connect the L/R audio outputs to an external amplifier. This module is an audio receiver/decoder and should not be treated as a high-power speaker amplifier. 💡 Bluetooth Indicator Fast flashing: Bluetooth not connected Steady light: Bluetooth connected Slow flashing: Bluetooth audio playback in some versions ⚠️ Important Notes Do not supply more than the specified operating voltage. For lithium-battery operation, use a suitable 3.7–4.2V supply. The maximum 20m transmission distance depends on obstacles, interference and the connected Bluetooth device. This is a Bluetooth audio receiver module, not a power amplifier. Audio output should be connected to a suitable amplifier input. IC Variant Note: This product may be supplied with different compatible IC variants, including MH-M18 or JL AS208PO1429-25C4. Functionality is specified as equivalent for this product, and the variant will be shipped randomly depending on stock. 📦 Package Includes 1 × MH-M18 Wireless Bluetooth Audio Receiver Board Module
Wuzhi Audio ZK-MT21 Bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Amplifier Tone Board Bass AMP AUX
[Amplifier Board] Tip: Only when the audio input is sufficient and the power supply voltage/current is sufficient, there will be sufficient 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 adapter power supply is greater than the actual working power of the amplifier! You can check our others amplifier boards here. FAQ: 1. How to choose a power supply? The power supply with the board is very important. The ripple of the selected power supply must be small. A power supply with a large ripple will cause the bottom noise of the power amplifier board to become larger and there will be current noise. The higher the voltage, the greater the current, and the more adequate the output power. The power supply is 12V1A and can be equipped with 3-4inch speakers. If it is above 19V 5A, there is no problem with 8-10 inches, and the power supply must be highly regarded. If the voltage is too low, the amplified sound will easily cause sound distortion. If the current is too low, the speaker will pull down the voltage, which will result in abnormal operation or poor sound quality. It is recommended to use a power supply of 18V19V24V with a current above 5A. If you only have 9V12V or 1A 2A power supply, it can be used but the power is low. When the volume is selected close to the maximum, it may be distorted and affect the sound quality. 2. How to choose a speaker? Regarding speaker types: commonly used speakers are generally 4-8 ohms, which can be used. The left and right channel speakers need to be connected to full-range speakers or mid- to high-frequency speakers, and the power is between 20W-100W. The subwoofer speaker cannot be connected to an ordinary speaker, and a speaker with a subwoofer speaker must be connected with a power between 20-100. The dive frequency of the subwoofer speaker must be at least 50 Hz. If your speaker has a low power, such as between 20W-50W, it can be used. You need a lower power supply voltage to prevent the speaker from burning after amplifying the sound. For example, choose a power supply below 15V. If you are a 50W-100W speaker, don't worry about the problem of speaker burnout. You can choose a 12-24V power supply. The higher the selected voltage, the greater the sound or power that can be output. The speaker power should not exceed 100W, otherwise it will affect the sound quality. 3. Introduction to audio input mode This audio power amplifier module has two audio input methods: one is Bluetooth input, the other is AUX input, Bluetooth mode is preferred. Bluetooth can be connected in any mode. As long as the Bluetooth connection is successful, it is in Bluetooth mode, and the Bluetooth mode supports automatic connection back. When Bluetooth is not connected, AUX plug-in is in AUX mode. It should be note that when using AUX mode, you need to confirm that the Bluetooth connection of this module has been disconnected. 4. How to adjust the main volume? The MAIN—VOLUME knob adjusts the main volume. Right-handed main volume increases, left-handed main volume decreases. The main volume affects the volume of the left and right channels and the subwoofer. 5. How to adjust the left and right channel high and low sounds? The R&L CHANNEL—BASS knob controls the bass, right-turning bass enhancement, left-turning bass attenuation. When the knob is in the rightmost position, the bass is neither enhanced nor attenuated. The R&L CHANNEL—TREBLE knob controls the treble, the right-handed treble is enhanced, and the left-handed treble is attenuated. When the knob is in the middle position, the high pitch is neither enhanced nor attenuated. Note when adjusting the treble and bass: when the treble or bass is adjusted to the maximum by turning right, if the sound is distorted, the gain of the treble or bass adjustment is too large. You need to turn the treble or bass knob to the left to lower the gain or turn the right Turn the MAIN-VOLUME knob to the left to reduce the total volume. 6. How to adjust the subwoofer? SUBWOOFER—VOLUME knob is used to control the volume of the subwoofer. Right-handed volume increases, and left-handed volume decreases. The SUBWOOFER—FREQ knob controls the cutoff frequency of the subwoofer. The right-hand frequency increases, and the left-hand frequency decreases. The frequency adjustment range is 20HZ-200HZ. 7. The voice is small and okay. When the voice becomes louder, the voice becomes muddy? The sound is distorted, please turn down the total volume or change to a higher voltage adapter power supply. 8. The sound is small, but when the sound becomes louder, the sound freezes? If the input power is insufficient, the power supply itself is protected against intermittent power failure. Please replace it with a higher-power power supply; or if the power is too large, the power amplifier board will generate serious heat and thermal protection has occurred. Reduce power usage or enhance heat dissipation. 9. What factors are related to the sound quality? The sound quality is not only related to the power amplifier module, but also related to the power supply, sound source, and the entire audio system. Basically, every aspect of the audio system will affect the sound quality, among which the main links are the audio transmission line, the audio power supply, the tone circuit, the power amplifier circuit, the speakers and the surrounding environment. The sound quality is the best only when the sound source, power supply, amplifier module and speakers are matched. Feature: Product Name: 2.1 channel audio amplifier module Product Model: ZK-MT21 Bluetooth Version: 5.0 (no shielding, 15 meters) Input Sensitivity: 500mV Audio Input: AUX + Bluetooth Channel: 2.1 Chip Solution: Domestic power amplifier chip Power Range: DC 12-20 V / 5A above (Do not connect to 24V battery pack) Adapter Speaker: 20-100 W, 4-8 Ω Output Power: Left and right channels <50W, Subwoofer <100W Protection Mechanism: Anti reverse connection. Overheat. Overcurrent. Short circuit Product Dimensions: 93mm*90mm*22mm Package Weight : about 185g (packaging) Package Includes: 1 x ZK-MT21 bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Amplifier Tone Board Bass AMP AUX
Bluetooth MP3 Decoding Board Module with inbuilt SD Card Slot / USB / FM / and Remote Control
[Audio, Audio Receiver] Bluetooth MP3 Decoder Board Module with USB, SD Card, FM Radio, AUX & Remote Control The Bluetooth MP3 Decoder Board Module is a compact and versatile multimedia audio player designed to add multiple audio playback options to DIY speakers, amplifier systems, home theaters, car audio systems, portable speakers, and custom audio projects. It combines Bluetooth, USB, SD/TF card, AUX input, and FM radio functions in a single convenient module. The module can be connected to a compatible audio amplifier board to create a complete multimedia audio system. It features a clear LCD display for displaying playback information, input mode, track details, and FM frequency. An included IR remote control allows convenient wireless operation from a distance. With support for popular audio formats including MP3, WMA, WAV, FLAC, and APE, the module provides flexible playback options for different music sources. ⭐ Key Features Bluetooth wireless audio receiver Built-in USB port for music playback Built-in SD/TF card slot FM radio function AUX audio input Supports USB / SD / Bluetooth / FM / AUX source selection Stereo digital audio output LCD display for playback information Includes IR remote control Supports folder selection and organized playback Supports Bluetooth stereo audio Hands-free calling support as specified Compact design for easy installation Suitable for DIY audio projects 📋 Technical Specifications Product Type: Bluetooth MP3 Decoder Board Bluetooth: Bluetooth Audio Receiver Audio Output: Stereo Digital Audio Output Input Sources: Bluetooth / USB / SD (TF) Card / AUX / FM USB Support: Yes SD/TF Card Slot: Yes FM Radio: Yes AUX Input: Yes Display: Seven segment Display Remote Control: IR Remote Included Audio Formats: MP3 / WMA / WAV / FLAC / APE Bluetooth Function: Wireless Audio Playback / Hands-Free Calling Playback Function: Folder Selection & Music Playback Installation: Audio Amplifier / DIY Speaker System Application: DIY Speakers, Home Theater, Car Audio, Portable Audio Systems Mounting Type: Panel / Enclosure Mount Power Supply: Refer to the specific module version before connection Output Connection: Connect to a compatible amplifier input Module Type: Multi-Function Audio Decoder Board 🔧 Applications DIY Bluetooth Speakers Portable Speaker Systems Home Theater Upgrades Car Audio Modification Amplifier Projects Multimedia Speaker Repair Custom Audio Systems DIY Music Players Portable Audio Systems Electronic Audio Projects 🛠️ How It Works The module works as a multi-function audio source and decoder. Select Bluetooth, USB, SD/TF card, AUX, or FM radio as the required audio source. The module decodes the selected audio signal and provides a stereo audio output that can be connected to a compatible amplifier board. For a DIY speaker project, connect the decoder module to a suitable amplifier and then connect the amplifier to the speakers. The included IR remote can be used to control playback, mode selection, track selection, volume, and other supported functions. 🔌 Installation Connect the module to a compatible power supply according to the specifications of the particular module version. Connect the audio output to the input of a suitable amplifier board and connect the amplifier output to the speakers. Insert a compatible USB drive or SD/TF card containing supported audio files, or pair the module with a Bluetooth device. AUX input and FM radio can also be selected using the module controls or remote control. 📦 Package Includes 1 × Bluetooth MP3 Decoder Board Module with USB / SD / FM / AUX 1 × IR Remote Control 1 × Power & Signal Connecting Cable ⚠️ Precautions This module is not recommended for beginners without basic electronics knowledge. Check the module's required supply voltage and polarity before powering it. Ensure all wiring is correct before switching on the power. Connect the audio output to a compatible amplifier input. Do not connect speakers directly to the decoder output unless confirmed by the specific module version. Avoid short circuits between power and signal connections. Do not expose the board to water or excessive moisture. We are not responsible for damage caused by incorrect wiring, improper installation, or misuse.
TPA3110D2 2x15W Class-D Stereo Audio Amplifier Board 12V Digital Power Amplifier Module
[Amplifier Board] The TPA3110D2 Audio Amplifier Module is a compact and high-performance Class-D stereo amplifier board designed for efficient audio amplification. Based on the TPA3110D2 amplifier IC, it delivers clear sound quality, low distortion, and excellent power efficiency. In addition, the module can provide up to 15W per channel, making it suitable for powering bookshelf speakers, DIY Bluetooth speakers, multimedia systems, and portable audio projects. As a result, it offers powerful and reliable audio performance while maintaining low power consumption. Because of its Class-D architecture, the amplifier generates less heat compared to traditional analog amplifiers. Furthermore, its compact size makes integration easy in custom audio projects and space-constrained applications. The board includes built-in protection features such as over-temperature, short-circuit, and under-voltage protection. Moreover, it supports a wide operating voltage range, allowing compatibility with batteries, adapters, and DC power supplies. This amplifier module is widely used in Bluetooth speakers, home audio systems, multimedia speakers, portable sound systems, and DIY electronics projects. 🔹 Key Features Based on TPA3110D2 amplifier IC Class-D high-efficiency amplifier design Stereo audio output Up to 2×15W output power Low distortion and low noise Wide DC operating voltage range Built-in protection circuits Compact and lightweight module design Suitable for DIY audio projects 🔹 Technical Specifications Amplifier IC: TPA3110D2 Amplifier Type: Class-D Digital Amplifier Output Channels: Stereo (2 Channel) Output Power: 2 × 15W (Max) Supply Voltage: DC 8V – 18V Recommended Voltage: 12V DC Speaker Impedance: 4Ω – 8Ω Efficiency: Up to 90% Signal-to-Noise Ratio (SNR): >100dB THD+N: <0.1% Protection Features: Overcurrent, Overtemperature, Short Circuit Protection PCB Type: Audio Amplifier Module 🔹 Applications This amplifier module is suitable for: DIY Bluetooth speakers Home audio systems Multimedia speaker systems Portable speaker projects Battery-powered audio devices Educational electronics projects DIY amplifier builds 🔹 Package Includes 1 × TPA3110D2 Stereo Audio Amplifier Module
100K 16mm Linear Taper 6-Pin Dual Gang Rotary Potentiometer
[Potentiometer] The 100K 16mm Linear Taper Dual Gang Rotary Potentiometer is a precision variable resistor designed for accurate voltage and signal adjustment in audio, electronic, and industrial applications. Its dual-gang construction enables two separate circuits to be controlled simultaneously using a single rotating shaft, making it ideal for stereo volume control and dual-channel signal adjustment. Manufactured with high-quality resistive elements and durable metal components, the potentiometer delivers smooth rotation, low noise operation, excellent linearity, and long mechanical life. The 16mm body size provides a compact solution suitable for PCB mounting in amplifiers, mixers, DIY audio systems, control panels, and electronic equipment. The 100KΩ linear taper provides uniform resistance variation throughout the rotation angle, making it suitable for voltage dividers, signal attenuation, and control circuits where linear response is required. With a standard knurled shaft and 6 solder terminals, this potentiometer is easy to install and compatible with a wide variety of control knobs and electronic projects. 🔹 Key Features Dual gang rotary potentiometer 100KΩ linear taper resistance Smooth and precise rotation 16mm compact body 6-pin solder terminal design Low noise operation Long mechanical life Durable metal shaft Easy PCB mounting Suitable for stereo audio control 🔹 Technical Specifications Product Type: Dual Gang Rotary Potentiometer Resistance Value: 100KΩ Taper Type: Linear (B100K) Number of Gangs: Dual Number of Pins: 6 Body Diameter: 16mm Shaft Type: Knurled Metal Shaft Shaft Diameter: 6mm Shaft Length: Approx. 15mm Rotation Angle: Approx. 300° Mounting Type: PCB Through Hole Terminal Type: Solder Pins Power Rating: 0.125W (Typical) Resistance Tolerance: ±20% Operating Temperature: -10°C to +70°C 🔹 Applications Suitable for: Audio amplifiers Stereo volume control Tone control circuits Audio mixers Power amplifiers DIY electronics Signal level adjustment Voltage divider circuits Instrumentation equipment Electronic control panels 🔹 Package Includes 1 × 100K 16mm Linear Taper 6-Pin Dual Gang Rotary Potentiometer
10K Ohm 16mm Linear Taper 6-Pin Dual Gang Rotary Potentiometer
[Potentiometer] 16mm 10KΩ 6-Pin Dual-Gang Rotary Potentiometer The 16mm 10KΩ 6-Pin Rotary Potentiometer is a compact and versatile dual-gang rotary potentiometer designed to control two separate electrical channels simultaneously using a single rotary shaft. With 6 pins in total, each potentiometer section has 3 terminals, making it suitable for stereo audio control, dual-channel signal adjustment, amplifier circuits, tone control, and various DIY electronics applications. By rotating the shaft, the resistance of each potentiometer section can be adjusted smoothly. The dual-gang construction allows both channels to be controlled together, making this potentiometer particularly useful for stereo volume control and other applications requiring synchronized adjustment. ⭐ Key Features 10KΩ resistance value 16mm body diameter 6-pin dual-gang configuration 3 pins per potentiometer section Single rotary shaft controls both gangs Smooth and reliable rotary operation Compact design Suitable for PCB and panel mounting Ideal for stereo and dual-channel applications Suitable for audio and general electronic circuits Compatible with suitable potentiometer knobs 📋 Technical Specifications Product Type: Rotary Potentiometer Resistance Value: 10KΩ Body Diameter: 16mm Configuration: Dual Gang Number of Pins: 6 Pins per Gang: 3 Operation: Single Turn Rotary Shaft Length: 9mm Total Potentiometer Height: 27mm Mounting Type: PCB / Panel Mount Application: Variable Resistance / Voltage Control 🔌 Pin Configuration The potentiometer has 6 pins in total, divided into two independent 3-pin sections: Pins 1, 2 & 3: First potentiometer section Pins 4, 5 & 6: Second potentiometer section Each section consists of two resistive-track terminals and one center wiper terminal. Rotating the shaft moves the wiper and changes the resistance or output voltage. 🔧 Applications Stereo Audio Volume Control Audio Amplifiers Tone Control Circuits Pre-Amplifier Circuits Dual-Channel Signal Adjustment LED Brightness Control Motor Speed Control Power Supply Adjustment 555 Timer Circuits Arduino Projects ESP32 Projects DIY Electronics Projects Audio Equipment Electronic Prototyping 🛠️ How to Use The two outer terminals of each potentiometer section can be connected across the required voltage or signal path, while the center terminal works as the adjustable wiper output. In stereo audio applications, one gang can be used for the left channel and the other gang for the right channel, allowing both channels to be adjusted simultaneously. 📦 Package Includes 1 × 16mm 10KΩ 6-Pin Dual-Gang Rotary Potentiometer ⚠️ Precautions Check the pin configuration before connecting the potentiometer. Do not exceed the electrical limits of the connected circuit. Ensure correct wiring when using both gangs for stereo applications. Use a suitable knob compatible with the shaft. The exact taper and shaft shape may vary depending on the product variant.
47K 16mm Linear Taper 6-Pin Dual Gang Rotary Potentiometer
[Potentiometer] The 47K 16mm Linear Taper Dual Gang Rotary Potentiometer is a high-quality variable resistor designed for precise voltage and signal adjustment in audio and electronic circuits. Its dual-gang construction allows simultaneous control of two independent channels using a single shaft, making it perfect for stereo volume and tone control applications. Equipped with a D-cut metal shaft, the potentiometer provides a secure fit for compatible control knobs, preventing slippage during operation. The 47KΩ linear resistance offers uniform resistance change across the entire rotation angle, making it suitable for signal control, voltage divider circuits, and industrial electronic equipment. Built with high-quality resistive elements and durable metal contacts, it delivers smooth rotation, low noise, excellent stability, and a long mechanical life. The compact 16mm body and 6-pin PCB mounting design allow easy installation in amplifiers, mixers, control panels, and DIY electronic projects. 🔹 Key Features Dual gang rotary potentiometer 47KΩ linear taper (B47K) D-cut metal shaft 6-pin PCB mounting Smooth and precise rotation Low noise operation Long mechanical life Compact 16mm body Durable construction Ideal for stereo audio applications 🔹 Technical Specifications Product Type: Dual Gang Rotary Potentiometer Resistance Value: 47KΩ Taper Type: Linear (B47K) Number of Gangs: Dual Number of Pins: 6 Body Diameter: 16mm Shaft Type: D-Cut Metal Shaft Shaft Diameter: 6mm Shaft Length: Approx. 15mm Rotation Angle: Approx. 300° Mounting Type: PCB Through Hole Terminal Type: Solder Pins Power Rating: 0.125W (Typical) Resistance Tolerance: ±20% Operating Temperature: -10°C to +70°C 🔹 Applications Suitable for: Stereo audio amplifiers Volume control circuits Tone control circuits Audio mixers Home audio systems DIY electronics Signal level adjustment Voltage divider circuits Instrumentation equipment Electronic control panels 🔹 Package Includes 1 × 47K 16mm Linear Taper Dual Gang Rotary Potentiometer with D-Cut Shaft
Out of stockHome Theater Board: 2.1 Home Theatre Circuit Board Three 2030 Transistor
[Amplifier Board] Description This is a 2.1 Home Theater Amplifier Board with a capacity of 100W Audio output. Use this 2.1 board for replacement or build your own home theatre. This can be used in 2 channel sound system with one subwoofer to get full bass boost mode. Note: This kit is not for the electronics hobbyist. Proper knowledge about the subject is required to understand and make the complete project. We do not hold any responsibility for any issues or help either due to negligence, ignorance or lack of proper knowledge about the subject. Specification / Feature Stereo Digital Audio Output With TDA2030 circuit, gives high-quality sound Input voltage 12-0-12 V Input current 1.5 to 3 amp Output Power 100 Watt Connection: Connect 2 speakers and 1 subwoofer Package Includes: 1 x 2.1 Home Theater Circuit Board Three 2030 Transistor * Image is only for representations.
Out of stock2x6W DC 5V 3.7V speaker modified Stereo Bluetooth amplifier board can connected lithium battery
[Amplifier Board] This is a 2x6W Bluetooth amplifier board with charge management that can be powered by lithium battery. Small heat production in standby, good stereo quality, suitable for small Bluetooth speakers. Features: 1. Small standby heating, good-quality stereo, suitable for Bluetooth speakers. 2. Output power 6W+6W, two-channel stereo, good sound quality. 3. Lithium batteries can be connected, with charge management. 4. When using a lithium battery, the charging interface can be charged with a 5-volt power supply or a mobile phone charger to charge a single-cell lithium battery. 5. The charge management circuit limits the battery to a maximum voltage of 4.2VDC. Specification: Item Type: Amplifier Board Model: HF69B Supply Voltage: 5VDC or 3.7V lithium battery Applicable Speaker Impedance: 4 ohms, 6 ohms, 8 ohms Charging Interface: When using a lithium battery, the charging interface can be charged with a 5 volt power supply or a mobile phone charger to charge a single lithium battery. Package Includes: 1 x 2x6W DC 5V 3.7V speaker modified Stereo Bluetooth amplifier board
TPA3116D2 XH-M543 120W Dual Channel High Power Digital Power Amplifier Board
[Amplifier Board] Build your own music system with 30- 120 watts of stereo output. TPA3116D2 XH-M548 Dual Channel 30-120W Digital Power Amplifier Board is newly designed digital audio amplifier board with fine quality is practical to install and use also has good performance. It features high-efficiency class D audio power amplifier with the latest and original TPA3116D2 /TPA 3110 core technology the BTL bridge circuit is more efficient than before. This product uses the double power supply transformer with a dynamic power supply range from 12V to 22V with high efficiency small quiescent current. Additionally, it is equipped with Perfect protection functions like overvoltage protection and output current limit. Features: A strong TPA3116D2 / TPA 3110 chip is a digital power amplifier chip, with low idle loss characteristics, makes it work well and quickly. Onboard, front-facing IC to improve the input sensitivity, high-definition sound quality. It can be used for car vehicle computer speaker, family audio and video, and empty square. This product has the characteristics of loud sound, the capacitance is large, excellent sound quality. There is no solder joint on the back of the circuit board, the chip capacitors, and the solder board together, so there is no possibility of short circuit. Package Includes: 1 x TPA3116D2 XH-M543 30-120W Dual Channel High Power Digital Power Amplifier Board
433Mhz RF Transmitter With Receiver Kit For Arduino ARM MCU Wireless
[RF Module] This is a 433Mhz RF transmitter with a receiver kit for Arduino ARM MCU wireless. It can be used as a Remote control switch, electric doors, shutter doors, windows, remote control socket, remote control LED, remote control stereo, and alarm systems. Specifications for Receiver module: Operating voltage: DC5V Quiescent Current: 4mA Receiving frequency: 433.92MHZ Receiver sensitivity: -105DB Specifications for transmitter module: Launch distance:20-200 meters (different voltage, different results) Transfer rate: 4KB / S Operating mode: AM Transmitting power: 10mW Transmitting frequency: 433M Pinout from left-right: (DATA; VCC; GND) Operating voltage :3.5-12V Applications: Remote Controls Automation System Wireless Security System Sensor Reporting Car Security System Remote Keyless Entry Package Includes: 1 x Receiver module 1 x Transmitter
TPA3116D2 50W+50W Dual Channel Mini Digital Amplifier Class D Amplifier
[Amplifier Board] XH-M562 TPA 3116 D2 50Wx2 Dual Channel Mini Digital Amplifier Board DC 12V The XH-M562 TPA 3116D2 50W+50W Dual Channel Mini Digital Class D Amplifier. Allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area. With the same numbers of external components, the efficiency of the TPA 3116D2 is much better than that of Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications. Features : Dual-channel stereo, high output power (50w + 50w power @ 12V ). Good sound quality. Double panel wiring solves crosstalk. Supermini design allows it to be easily placed in a variety of digital products. Filterless, Low Quiescent Current and Low EMI. Superior Low Noise. Short Circuit Protection. Thermal Shutdown APPLICATION : Bluetooth Stereo Audio hands-free/headsets In robots that speak or generate sounds to indicate activities Portable Speakers LCD Monitors / TV Projectors Arduino or Raspberry Pi Game Machines Speaker Phones
Out of stockTDA7492P 50W Wireless Digital Audio Receiver Amplifier Board
[Amplifier Board, Audio Receiver] TDA 7492 P 1 x Amplifier Board 25Wx2 AUX Wireless High Quality This is TDA7492 p based is Class-D audio amplifier. This module has integrated a Bluetooth module, all the used components in the amplifying process, output connectors and control buttons. All you need to do is supply 12V to 36A to it, connect an 8-ohm 50W speaker to each output and connect a Bluetooth device to it and enjoy and control your favourite music wirelessly. In the layout above you can see that the board has 5 control buttons. You can also use those to change the track or control the volume. There is a DIP 2 switches button. Combining the up/down position of each switch you can obtain 4 different filters for the output. In the layout above you can see each combination and the applied gain in each case. This Amplifier has Audio stereo input and connectivity to all versions of the Bluetooth connection, using CSR8635 Bluetooth chip with Bluetooth V4.0. Output Impedance of module is 8 ohms per channel. TDA7492 digital amplifier chip, designed to optimize the circuit layout, the sound quality is very good, big power DIP switches can be adjusted directly after the amp gain more respect and better promote greater damping horn. Features: 25 W + 25 W continuous output power at THD = 10% with VCC= 20 V and RL= 8 Ω Wide-range single-supply operation (8 – 26 V) High efficiency (η = 90%) Four selectable, fixed gain settings of nominally 21.6 dB, 27.6 dB, 31.1 dB and 33.6 dB Differential inputs minimize common-mode noise Standby and mute features Short-circuit protection Thermal overload protection Externally synchronizable
TPA3110 30W (15W+15W) Digital Stereo Audio Power Amplifier Board Module CA-3110
[Amplifier Board] The TPA3110/HDX8816A is a 2×15 Watt Class D Power Amplifier Board. It is designed to drive Professional Stereo Audio Speakers. This Amplifier Board is mostly used with 8-ohm speakers but it can successfully drive the speaker as low as 4 ohm. It's a very high efficient board which eliminates the need of using a heat sink. This device is fully protected against the shorts to GND, VCC & Output to Output. The Application of this device is endless in the segment of consumer electronics. Its most common and widely used application is in Televisions and mid-range compact audio equipment. Features : Wide range in Input voltage Source i.e. from 8v to 24v. It can be used for applications like cars, vehicles, computer speakers, family audio and video systems, and in your own DIY Music System. This amplifier board comes with 4 mounting holes, which is very helpful in tightening the complete circuit board according to your project requirement. 3110 power amplifier chip does not require a heat dissipation sink. It has over-current and over-heat protection. Specification : Operating voltage range: 8V to 24V Amplifier chip: TPA3110 / HDX8816A Output power: 2 x 15W Dimension: 25mm x 33mm x 3mm Package includes: 1x TPA3110 30W (15W+15W) Digital Stereo Audio Power Amplifier Board Module
PAM8403 5V Two-channel Stereo Mini Class-D 3W+3W Audio Amplifier
The PAM8403 5V Two-channel Stereo is a 3W+3W, class-D audio amplifier. Allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8403 is much better than that of Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications. Features : Dual channel stereo, high output power (3 w + 3 w power @ 5V and 4 ohms load). Good sound quality. Double panel wiring solves crosstalk. Super mini design allows it to be easily placed in a variety of digital products. 3W Output at 10% THD with a 4ΩLoad and 5V Power Supply. Filterless, Low Quiescent Current and Low EMI. Superior Low Noise. Short Circuit Protection. Thermal Shutdown Application : Bluetooth Stereo Audio hands-free/headsets In robots that speak or generate sounds to indicate activities Portable Speakers LCD Monitors / TV Projectors Arduino or Raspberry Pi Game Machines Speaker Phones
Out of stockTPA3110 30W HW-404 2.0 Channel Digital Stereo Audio Power Amplifier Board
[Amplifier Board] Build your own music system with dual 30W of stereo output. TPA3110 XH-A232 Dual Channel Digital Power Amplifier Board is a newly designed digital audio amplifier board with fine quality is practical to install and use also has good performance. It features a high-efficiency class D audio power amplifier with the latest and original TPA3110 core technology the BTL bridge circuit is more efficient than before. This product uses the double power supply transformer with a dynamic power supply range from 12V to 24V with high efficiency small quiescent current. Additionally, it is equipped with Perfect protection functions like overvoltage protection and output current limit. Features: Strong TPA3110 chip is a digital power amplifier chip, with low idle loss characteristics, which makes it work well and quickly. Onboard, front-facing IC to improve the input sensitivity, high-definition sound quality. It can be used for car vehicle computer speaker, family audio and video, and empty square. This product has the characteristics of loud sound, the capacitance is large, excellent sound quality. There is no solder joint on the back of the circuit board, the chip capacitors, and the solder board together, so there is no possibility of a short circuit. Package Includes: 1 x XH-A232 TPA3110 30W 2.0 Channel Digital Stereo Audio Power Amplifier Board