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ZK-TB21 TPA3116D2 Bluetooth 5.0 Subwoofer Amplifier Board 50W × 2 + 100W 2.1 Channel – Voltech ElectronicsProduct DescriptionThe ZK-TB21 TPA3116D2 Bluetooth 5.0 Amplifier Board is a compact and powerful 2.1 channel Class D digital amplifier, delivering 50W + 50W stereo output along with a dedicated ..

Wuzhi Audio ZK-TB21 + App Hi-Fi 2.1 Bluetooth Amplifier (50W + 50W + 100W Sub) – Official in BangladeshProduct DescriptionThe Wuzhi Audio ZK-TB21 + App Hi-Fi 2.1 Bluetooth Amplifier is a compact yet powerful Hi-Fi amplifier, delivering 50W + 50W stereo output plus a dedicated 100W subwoofer channel...