1. Product Introduction The amplifier board is designed for the small space of modern digital products. Its compact size delivers powerful performance and can be seamlessly integrated into various devices, serving as an invisible enhancer of sound effects. Whether in a slim laptop, portable speaker, or spaceconstrained LCD TV and monitor, it adapts effortlessly to deliver stunning audio performance. 2. EFFICIENCY This audio amplifier board utilizes advanced Class D amplification technology, achieving up to 90% efficiency. It delivers an impressive output power of 3W (left channel) 3W (right channel) with a 4Ω load and 5V power supply. This ensures a more powerful and clearer audio experience while minimizing power consumption, significantly extending the device's battery life. 3. No Temperature Impact The Class D power amplifier features extremely gain efficiency, ensuring sound quality remains unaffected by temperature fluctuations. Even during prolonged operation or under load conditions, this mini amplifier maintains stable output power without requiring additional heat sinks. This prevents sound quality degradation due to temperature rise. 4. Noise Reduction Circuit The mini digital power amplifier board incorporates a builtin noise reduction circuit, effectively suppressing noise during power on/off for clear, noise sound. Additionally, it supports shortcircuit, overcurrent, and overheating protection, providing multiple safeguards for device safety. It operates reliably even in complex environments, preventing potential circuit damage.