ITEM NAME:PAM8406 Digital 2 Channels 5V DC amplifier Board B2K6 PAM8406 Digital 2 Channels 5V DC amplifier Board B2K6 Two channel amplifier board(PAM8406 Chip) DC single power supply:2.5-5V recommended voltage:5V Output impedance:2-8Ω;Board Size:3.9x4.5cm Stable, good sound quality Material: PCB board Suitable for the majority of electronics enthusiasts assembly and refit the best choice for speaker Use DC Single power supply, external line in/or stereo headphone plug signal input to make active amplifier role The PCB circuit carefully designed, neat wiring, circuit is very mature Circuit using the left and right channel output terminals connected, very easy to operate Package Included:1 x PAM8406 amplifier Board Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.