Features: Loudsspeaker: The highly-performances amplifier board effortlessly delivers 200W, offering excellent sound quality and robust drive capability. It effortlessly power 15inch loudspeakers without strain. monophonic: This digital power amplifier board is a monaural rear amplifier module. Should you require double channels, please purchase two units. Actual Performances: Power amplifier board module delivers distortion less 200W output with power rating of 300W. Wide Power Supply Ranges: The monophonic power amplifier board accommodates a broad power supply ranges. Provided sufficient power is available, the voltages can operate between ±20-90V. Highly Performances: Circuit design employs the A970 C2240 for highly voltages auditory double differential circuitry and the A1145 C2705 for voltages. Mediumed-power transistors are utilised for the A1837 C4793, with the output stage employing the A1943 C5200. Specifications: Item: monophonic 200W Amplifier Board Power supply voltages: double voltages DC20V-90V (It is recommended to use below 90V, do not challenge the voltages limit.) Power: 200W (distortionless) PCB board size: 120x60MM/4.72x2.36in Package Includes: 1PC monophonic 200W amplifier board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.