ITEM NAME:1 * Digital Amplifier Board Module w/ Volume Potentiometer Dual Channel Nice Descriptio n Description: Excellent noise suppression, in the case of no input audio, ears close to the speaker can not hear any sound. Dual channel stereo, 5 v power supply can output 5 w + 5 w power, can direct drive 4 ÃŽ ©, 8 ÃŽ © small speakers, big output power, energy, energy sufficient, good quality, with around a track volume. Unique class D digital power board without LC filter, which can directly use USB power supply of computer. Double panel wiring, properly solve the wiring caused by the ground potential balance and crosstalk between the sound channel. Super micro design, can be easily placed in what kind of digital products inside the small space, high magnification efficiency. All use machine for full plate welding, welding quality is comparable to manual welding iron. Specifications: Ultrafine Volume: 23*24mm Rated Operating Voltage: 2.5-5V Ultimate Operating Voltage: 5.5V Package Included: 1 * PAM8406 Digital Amplifier Board Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality buy, happy buyï ¼ 1 * Digital Amplifier Board Module w/ Volume Potentiometer Dual Channel Nice.Double panel wiring, properly solve the wiring caused by the ground potential balance and crosstalk between the sound channel. All use machine for full plate welding, welding quality is comparable to manual welding iron.