Description: Product: High power subwoofer speaker diy amplifier board. DIY Board: The amplifier board features simple wiring, making it particularly suitable for DIY audio projects. Design: Subwoofer power amplifier board boasts a wide frequency response ranging from 10HZ-20KHZ, delivering a full of sound for an immersive audio experience,with a low distortion rate,clear sound output.Compact: Measuring 13cmx10cmx6cm, this compact amplifier board can be easily installed in various audio setups. Material: Made from metal and premium material, amplifier module is sturdy for long term use. Specification: Working Voltage: 15V-18VOutput Power: 50W+50WOperational Amplifier Type: 4122Frequency Response: 10HZ-20KHZAttention: The output wire should not be short circuited, otherwise the amplifier tube will be burned out. Size Chart: 13cmx10cmx6cm/5.12inchx3.94inchx2.36inch Package Includes: 1 Audio Stereo Amplifier Board Note: Please allow slightly errors due to manual measurement and different monitors.