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XTW8403 Mini 5V Digital Amplifier Board w/ Switch Potentiometer -Green
Hi-Fi digital chip£¬ reasonable circuit; Power filter upgrade to 470uf; 1.6mm glass fiber board; Potentiometer's life up to 15 years£¬ with switch£¬ can cut off power directly; Power supply: DC 5V; Min. output: 3W x 2