2 Pieces PAM8403 Mini 2 Channel Stereo 3W Class D Audio Power Amplifier Module Board

This miniature PAM8403 3W Class D audio amplifier module offers low THD+N, allowing it to achieve high-quality sound reproduction, all in a form factor about the size of a US postage stamp! It can be used in any DIY design requiring a miniature audio amplifier, especially portable and mobile applications operating on battery power. Features: Can use the computer USB port, USB power bank or a mobile phone charger to supply the 5V support power Battery power can also be used High efficiency: 90% Can provide 3W (left channel) + 3W (right channel) output power into a 4Ω speaker load and 5V power supply CMOS class D amplifier design for high efficiency and low cost Noise canceling circuit built into the amplifier board Power on / off without popping noise Short-circuit current protection, under-voltage lockout and over-temperature protection (shuts down at an internal temperature of 140C +/- 15C) Specifications: Operating voltage: 2.5V-5.5V Speaker Load: 4-8 Ohms Size: 21 x 18 x 3.4 mm (