Check the listing for details. PAM8403 3W Stereo Audio Power Amplifier Board Module with Volume Control Pot US. Color: Green, Condition: New. Listed at 5.69 USD. Miniature 2 Channel * 3 Watt PAM8403 Class D Stereo Audio Power Amplifier Module Board with Power Switch and Volume Control Potentiometer This miniature PAM8403 module is a 3W, class-D stereo audio amplifier. It 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 operate from a 5V USB power supply or batteries, and includes a power switch and volume control potentiometer for ease of use. 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 powerBattery power can also be usedHigh efficiency: 90%Provides 3W (left channel) + 3W (right channel) output power into a 4Ω speaker load and 5V power supplyCMOS class D amplifier design for high efficiency and low costNoise canceling circuit built into the amplifier boardPower on / off without popping noiseIntegrated power switch and volume control (turn knob fully counter-clockwise to turn off)Module has 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-5.5VSpeaker Load: 4-8 OhmsSize: 29 x 20 x 12.5 mm (L x W x H); 29 x 35 x 12.5 including volume control knobVolume control potentiometer shaft diameter: 6mmNet weight:8g Package Contents:1 x PAM8403 Class D Stereo Audio Power Amplifier Module with Volume Control PotentiometerSpecifications and usage instructions Get it faster! We ship in 1 business day from our Colorado office for quick delivery. Note:This module has a floating output, therefore left and right channel "negative" connections should not be connected together. The module is designed for driving speakers, it will not work with headphones, which usually share a common ground between the two channels. Click here to see our other Audio and Stereo Components and Modules. We provide FREE USPS First Class Shipping with Tracking - Not Economy Shipping