WUZHI TB21 pro 2.1 Channel Subwoofer Bluetooth Amplifier Board Upgrade TPA3116D2 Chip DC 12-24V 50W+50W+145W Power Outpu

Features 1 2 1 Channel independent output 50W 50W 145W supports subwoofer high fidelity and low distortion 2 SOP8 and DIP8 are compatible with dual packaging allowing for free switching of operational amplifiers 3 Supports lossless decoding of WAV APE and FLAC modes on USB drives 4 With protection mechanism input undervoltage overheating overcurrent short circuit protection and input anti reverse protection 5 Onboard microphone board expansion port and subwoofer expansion port as well as a mute control port for cascade anti POPs sound Specification Product Name 2 1 Channel Bluetooth Amplifier Board 50W 50W 145WProduct model ZK TB21 PROChip TPA3116D2Suitable power supply The working voltage range is 12 24VDC and it is recommended to use a DC power supply with a voltage of 24V and a current of 8A or above Cannot use 24V battery fully charged will cause overvoltage DC power supply is required AC power is not supported If using a DC DC boost module it is recommended to adjust it to 80 of the limit voltage to avoid module damage caused by overshoot or ripple overvoltage Maximum power Left and right channels ≤ 50W subwoofer ≤ 145WCompatible speaker Left and right channels 20 50W 4 8 Ω subwoofer 50 150W 2 8 ΩBluetooth distance transmission distance of 15 metersInput method Bluetooth AUX PC USB Bluetooth priority Bluetooth needs to be disconnected when using audio cable inputNumber of channels 2 1 left and right channels subwooferProtection