20Pcs PAM8403 Miniature Digital USB Power Amplifier Board 2.5V - 5V

Description: Large output power, energy sufficient, good quality, can directly drive 4 or 8 small speakers Good noise suppression you will hear nothing from the loudspeaker if there is no audio input Your can charge this board directly with your computer or mobile phone USB Super mini design can be easily placed in a variety of digital products The whole board adopts machine welding with high quality stand The negative pole of left and right channels output end cannot connect together. Specifications: Unit size: 1.85 x 2.11cm Material: FR4 Input Voltage: 2.5 - 5V USB power supply is available Package included: 20 x 3W D-Type PAM8403 amplifier board