Description: Low distortion, low noise, high pressurization. Using excellent raw materials, the power consumption is lower. Small size design, clear sound output, the maximum output power is 40W, can drive 4 ohm speakers. Using external heat sink chip to make work more stable. 2.1 Channel design, easy to install,convenient disassembly, first choice of DIY! Specification: Material: Plastic Size: 100 x 83 x 58 mm / 3.94 x 3.26 x 2.28 inch Package Includes: 1 Piece Amplifier Board Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor