Catalog > Consumer Electronics > Kits > Various Kits Micro Digital Amplifier Board Micro Digital Amplifier Board HKD PAM8403 AUD AMP MICRO DIGITAL AMPLIFIER BOARD 2X3W CLASS D PAM8403 17.84 ZAR inc for 1 Each 42 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Can use 5V battery or any USB port to power. D class amplifier is highly respected today because its 90% high efficiency. A class, B class amplifier efficiency is only about 30%. Temperature does not affect the sound quality so no need to add heat sink therefore less space is taken. Module has a short-circuit current protection and over-temperature protection. Noise canceling circuit was built in, power on / off without pop noise. Can provide 3W (left channel) + 3 W (right channel) output power in the 4Ω load and 5V power supply conditions. Specifications User: Audio Module,mini digital amplifier Super Mini Size: 1.85 x 2.15cm Input voltage: 2.5-5V (can not be more than 5.5V, otherwise it will burn the IC on board) Output power: 2 channels x 3W Speaker Choice: It can work with 4 ohm and 8 ohm speakers, recommend 4 ohms. Net weight : 1g