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be quiet! SILENT WINGS PRO 4 140mm PWM
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    ZK-TB21 Power Amplifier Board Bluetooth5.1 TPA3116 Chip with Subwoofer 2.1 Channel 50W×2+100W, DC 12-24V Bluetooth and AUX Inputs

    • TPA3116D2 CHIPZK-TB21 adopt TPA3116D2(with am interference suppression function) chips, with excellent sound quality. It ensures that even with high power operation for a long time, THD is less than 0.1%
    • Bluetooth 5.1+3.5MM AUXThe ZK-TB21 supports Bluetooth and AUX inputs, compatible with most devices such as smartphones, TVs, and laptops, allowing you to connect easily.
    • Bluetooth Antenna BaseThe newly upgraded TB21 features the first-generation IPEX interface, allowing you to connect an external U.FL/IPEX 2.4G antenna to enhance the stability of the Bluetooth connection.
    • Protection FunctionThe ZK-TB21 Bluetooth power amplifier features multiple protection mechanisms, including short-circuit protection, over-current protection, over-heat protection, and anti-reverse protection, to ensure its safe operation.
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    TPA3116D2 CHIPZK-TB21 adopt TPA3116D2 (with am interference suppression function) chips, with excellent sound quality. It ensures that even with high power operation for a long time, THD is less than 0.1 %
    Bluetooth 5.1 + 3.5MM AUXThe ZK-TB21 supports Bluetooth and AUX inputs, compatible with most devices such as smartphones, TVs, and laptops, allowing you to connect easily.
    Bluetooth Antenna BaseThe newly upgraded TB21 features the first-generation IPEX interface, allowing you to connect an external U. FL/IPEX 2.4G antenna to enhance the stability of the Bluetooth connection.
    Protection FunctionThe ZK-TB21 Bluetooth power amplifier features multiple protection mechanisms, including short-circuit protection, over-current protection, over-heat protection, and anti-reverse protection, to ensure its safe operation.

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