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AIYIMA Upgraded A80 Power Amplifier TPA3255 DAC Bluetooth PFFB Stereo 300Wx2 Class D Digital Amp with RCA TRS OPT COA USB Input

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ZK-MT21 Digital Power Amplifier Board 2x50W+100W 2.1 Channel Subwoofer AUX 12V 24V Audio Stereo Bluetooth 5.0 Bass Amp for Home

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2*3W PAM8403 2.0Ch AUX Mini Digital Dual Channel Audio Amplifier 3W + 3W DIY Speaker USB 5V Small Stereo Amp Amplifier Board

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AIYIMA A80 TPA3255 Bluetooth DAC Stereo PFFB Power Amplifier 300Wx2 Class D 2.0 Hi-Res Digital Amp with RCA TRS OPT USB Input

Sinbosen FP Series DS-14K 2-channel power amplifier 4400w class td switching professional audio

ZK-502MT 2x50W 2.0 Channel Digital Power Amplifier Board AUX Audio Stereo Subwoofer Bluetooth-Compatible Bass Amp Board Module