Description: This product includes 2.1 motherboard and knob. Boot delay, instant shutdown,short circuit, overload protection. It has low noise, large output power and HIFI. Easy to install,convenient disassembly. Item like the picture shown. Specification: Material: electronic material Size: 95x75x55X55mm Model: DX2.1-2030 Package Includes: 1 x Subwoofer Amplifier Board
