Features 1.The characteristics of PM2038 circuit are external control, low‑power shutdown mode and internal overheat protection, and reduce the "start‑up surge pulse" in the circuit 2.Audio power amplifier peripheral components have stable performance and good sound quality 3.Built‑in start‑up surge pulse suppression circuit and overheating protection circuit, safe to use 4.High quality plastic material can make sure the durability and stability of the product 5.Adopted of high quality electronic components, and accuracy process, ensure for the durability Specification Item Type: Amplifier Board Module Material: Plastic Model: PM2038 Load: 4Ω Power: 3.5W typically Voltage: DC6V Typical Shutdown Current: 0.7μA Working Voltage Range: DC2-6V Built-in start-up surge pulse suppression circuit Built-in overheating protection circuit Package List 1 x Amplifier Board Module