500W Amplifier Board for home theater, active speakers, and DIY audio projects delivers an listening experience. Key features Class D digital power amplifier with efficiency and low idle loss, delivering strong output with reduced heat. Over temperature protection: the board shuts down if the heat sink FET temperature exceeds 100 C, ensuring safety and stable operation. performance input sensitivity: pure power amplifier with input sensitivity of 1.5 V RMS. If your source does not reach 1.5 V RMS, a preamplifier is recommended. Mono channel configuration: each board provides a single channel. For a 2.0 stereo system, two boards are required. Applications and use scenarios Build or upgrade a home theater system by powering front left and right channels or active speakers with reliable, power amplification. Use in DIY speaker projects to achieve strong per channel performance while maintaining safety with temperature protection. Ideal for projects needing a dedicated 500W class D amplifier stage, providing clear, fidelity sound for immersive listening experiences. Compatibility and performance notes Suitable for home theater and active speaker setups that require a 500W class D amplifier. Input signal sensitivity is 1.5 V RMS; if your source is below this level, add a preamplifier to reach the required input level. For stereo installations, two mono channel boards are needed to achieve 2.0 channel operation.