Description:- Adopting small body integration design, differential input amplification, for Toshiba 1943 5200 power amplification output.- High fidelity and sound quality, makes it better than digital power amplifier boards.- Suitable for modification in small space with high sound quality requirements.Specification:- Product name: 200W mono power amplifier board- Power supply: DC dual 35-60V (suitable for use with dual 24-43V transformers after self-equipped rectification and filtering.)- Output power: 300W 4ohm; 200W 8ohm- Frequency response: 20Hz - 30kHz- Distortion THD: <= 0.01%Precaution:- Before powering on the power amplifier board, the power tube must be equipped with a heat sink, and the power tube must be insulated with insulation.After installing the heat sink, measure it with a meter to confirm the insulation between the power tube and the heat sink before powering on. If not insulated, powering on will immediately damage the power tube.Package Included:- 1 x Power Amplifier Board