Photo 1 of 2PCS ZK-1001U Mono Amplifier Board, 100W Bluetooth5.3 Amplifier with TPA3116D2 Chip, Mini Amplifier Board with Boost, Treble and Bass for Home Audio DIY Speakers, Supports USB/AUX/BT Input, DC 9-24V

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Photo 1 of 2PCS ZK-1001U Mono Amplifier Board, 100W Bluetooth5.3 Amplifier with TPA3116D2 Chip, Mini Amplifier Board with Boost, Treble and Bass for Home Audio DIY Speakers, Supports USB/AUX/BT Input, DC 9-24VPhoto 2 of 2PCS ZK-1001U Mono Amplifier Board, 100W Bluetooth5.3 Amplifier with TPA3116D2 Chip, Mini Amplifier Board with Boost, Treble and Bass for Home Audio DIY Speakers, Supports USB/AUX/BT Input, DC 9-24V