Features: XH_M190 TDA3116D2 Poweful Digital Amplifier Board features powerful output and digital controls for excellent auditory effects. Supports double channel output, power output up to 2x100W; Adopts TDA3116D2 chip, featuring high efficiency. Support digital controls, easy to adjust sound and auditory input. Suitable for audiophiles, DIY enthusiasts and professional users who need high quality auditory output. Can be used in home theaters, music players, car auditory and other scenario to provide a clear and powerful auditory experience. Specifications: Size:about 6.5x10.50cm/2.56x4.13in Model: XH-M190 TDA3116D2 Input power: DC12-24V Output power: 2x100W Input resistance: 2x51K Output matching: 4-8ohms Frequency response : 14-100Kz Sex-to-noise ratio: 100db Output channel: 2 (left right) Package Includes: 1PC XH_M190 Digital Amplifier Board note: There might be a bit color distortions due to different computer resolution There might be size errors due to different computer resolution