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eBay Categories HT21 TB21 AUX Bluetooth 5.0 USB Stereo Audio Power Amplifier Board 2.1 Channel Description Product Feature 1: Power amplifier chip: TDA7498E 2: Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection 3: Widely used 4: Long-life ultra-quiet fan (locked rotor does not burn, no noise) 5: Simple to use and easy to understand Product name: 2.1 channel Bluetooth audio power amplifier module Product model: ZK-HT21 for Bluetooth version: 5.0 (unobstructed, 15 meters) Input method: AUX + for Bluetooth + USB (the dial button to switch modes and songs) Number of channels: 2.1 channels (left channel + right channel + subwoofer) Amplifier chip:TDA7498E Adapter power supply: DC15~36 V (under voltage protection below 9V, 12V power supply can also be supported) Adapted speakers: 30-200W, 4-8Ω Output power: left and right channels ≤160w Subwoofer≤220w Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection Product size: 145*126*28mm Product weight: net weight 327g, including packaging 395g Tip: When the audio signal input is large enough and the power supply voltage/current is large 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 adaptor is greater than the actual working power of the amplifier! Checklist 1*Power amplifier board kit HT21 TB21 AUX Bluetooth 5.0 USB Stereo Audio Power Amplifier Board 2.1 Channel Description Product Feature 1: Power amplifier chip: TDA7498E 2: Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection 3: Widely used 4: Long-life ultra-quiet fan (locked rotor does not burn, no noise) 5: Simple to use and easy to understand Product name: 2.1 channel Bluetooth audio power amplifier module Product model: ZK-HT21 for Bluetooth version: 5.0 (unobstructed, 15 meters) Input method: AUX + for Bluetooth + USB (the dial button to switch modes and songs) Number of channels: 2.1 channels (left channel + right channel + subwoofer) Amplifier chip:TDA7498E Adapter power supply: DC15~36 V (under voltage protection below 9V, 12V power supply can also be supported) Adapted speakers: 30-200W, 4-8Ω Output power: left and right channels ≤160w Subwoofer≤220w Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection Product size: 145*126*28mm Product weight: net weight 327g, including packaging 395g Tip: When the audio signal input is large enough and the power supply voltage/current is large 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 adaptor is greater than the actual working power of the amplifier! Checklist 1*Power amplifier board kit
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