Features: DIY is very simple, the entire board havebeen test and there is no need for debugging; DIY, upgrading, and modifying speaker are all great choice. Simple installation and ready to use design makings it user friendly. Perfect for music enthusiasts, DIY lovers, and professional engineers. Enhances your stereoexperiences in various setting like home, car, and studio. Experiences powerful performances with this amplifier board. Specifications: Material:ABS Voltage:Alternating Current Double 33-35Volt Output power: STK496-430 150Wx2 6Ω Size:Approx.117mm/4.61''x73mm/2.87''x52mm/2.05'' Accessory: 4pcs Coppernut,2pcs screw, 1piece threecores shieldings wire Note: The filter capacitors can withstands 50V by defaults. If power is higherthan 50V, replace the capacitors. Package Includes: 1x Power Amplifier note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.