ZK-TB21 TPA3116D2 Bluetooth-compatible 5.0 Subwoofer Amplifier Board 2.1 Channel Mops Mop Parts & Accessories Enjoy your highlighting voice in

Enjoy your highlighting voice in every

4 Piece Propellers

while supporting DVI system sideline signals

landscape models

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ZK-TB21 TPA3116D2 Bluetooth-compatible 5.0 Subwoofer Amplifier Board 2.1 Channel Mops Mop Parts & Accessories Enjoy your highlighting voice inITEM NAME: ZK TB21 TPA3116D2 Bluetooth compatible 5. 0 Subwoofer Amplifier Board 2. 1 Channel. Chip: TPA3116D2(with AM anti interference function). Subwoofer speakers cannot be connected to ordinary speakers. Speakers with subwoofer speakers should be connected, with power between 20 100W. The subwoofer horn must have a dive frequency of at least 50Hz.