PAM8403 small mini 5 v digital power amplifier board (can be USB powered) (XY) board USES PAM8403 digital power amplifier chip, circuit is simple, reliable work.Working voltage of 2.5 V to 2.5 V, 3 wx2 maximum output, efficiency can achieve 90% above, can use computer USB 5 V power supply, is very suitable for battery and portable electronic products.Bat small size, and is equipped with switch, potentiometer, can follow one's inclinations of the volume, and control the power switch to use and install is very flexible and convenient.Using devices all use the real thing, can be competent for long-term stability.

Product details of PAM8403 Volume Control Amplifier Board 2 * 3W Class D 5V can be USB Powered Amplifier Board Efficient Replace TDA7297 TDA2030 XH-M139 low Price

• Dimension:1.85*2.15cm
• Work Voltage:2.5V-5V, Limit Voltage: 5.5V
• Excellent noise suppression
• Large output power, good sound quality
• Double channel stereo, 5V power supply and can output 3W+3W power, and can directly drive 4 ohm & 8 ohm speakers
• Class D digital power board without LC filter, could be powered by computer USB
• Dual panel wiring, wiring properly solve the crosstalk caused by ground potential balance and inter channel
• Miniature design, can be easily placed into a variety of digital products