Features: Amplifiers Board 45MT A1943/C5200. This board delivers a remarkable 400W output for sound need. The Amplifiers Board features a toroidal transform and power amplifiers chip for stable use. Its user friendly design makes it suitable for various applications. This power amplifiers board is thickened with heat sink on the basis of old model. It adopts circuit design, highly power, good sound quality and minimal distortions! The parameters of power amplifiers board are strictly test. The two channel only need to connect according to the wiring diagrams. This board comes with filter rectification, with heat sink, only need to connect power supplies, transform and preamp! Mono wiring: only need to connect the included plug to board to be mono. Specifications: Material:ABS Length:Approx.22cm/8.66inch Operating voltage: Double AC24v45V (recommend Double AC30V / Double AC36V)200-400W toroidal transform chip: SanKen1494/3858 Channel type: two-channel Output: 800W/ 4ohm load (recommend Double AC35V 200-350Wtoroidal transform) Two-channel output: 400W+400W Impedance: 4ohm/8ohm Package Includes: 1pc Sound Board note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.