• S220H 2.1 Channel Bluetooth 5.0 Subwoofer Power Amplifier Board TDA7498E 160W×2+220W, 12V-36V Audio Power Amplifier Module, Treble Bass Note Tuning AMP KWD 13.500
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• XY-S100H TPA3116D2 Bluetooth 5.0 2.1 Channel Subwoofer Power Amplifier Board 50W×2+100W REBLE Bass Note Tuning AMP DC12V-24V KWD 8.500
• T50H TPA3116D2 Bluetooth 5.0 HiFi 2.0 Channel Power Audio Stereo Amplifier Board 2 x 50W Treble Bass Note Tuning AMP DC12-24V KWD 6.500
• ST21 TPA3221 Bluetooth 5.2 2.1 Channel Subwoofer Power Amplifier Board 100WX2+200W REBLE Bass Note Tuning AMP DC12V-30V KWD 12.500