Features: The XH-M251 high-powered digital power amplifier board adopts the TDA8954 chip, which has high efficiency and stability, the output power can be strong up to 250W, and the sound quality is clear . Supports digital input, with excellent signal noise ratios and low distortion characteristics. Built-in protective circuit, effectively preventing overheating, over-load, and short circuit. Small size, easy to install and carry. It can be widely used for home theaters, sound system, and car audional modification, providing excellent music playback and sound amplification effects. Specifications: Material: Printed Circuit Board Size: Approx.100x92mm/3.94x3.62inch Product name: Audional amplifier board Product model: XR251 Amplifier type: Class D Input voltage: 2xAC12-28V Output impedances group: 4-8ohms Output power: 210Wx 2 Package Includes: 1x Digital Power Amplifier Board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.