Features 1、External control, low power off mode and internal overheating protection 2、Built-in voltage spike suppression circuit 3、Built-in overheat protection 4、Upgraded coupling capacitance. Improvements on wiring 5、Excellent sound quality even with a few peripheral components Specification Description: Features: 1, External control, low power off mode and internal overheating protection. 3, Built-in overheat protection. 4, Upgraded coupling capacitance. Improvements on wiring. 5, Excellent sound quality even with a few peripheral components. Specifications: Load: 4 Ω Power: 3.5 W Shut Off Current Typical: 0.7 μA Package includes: 1 x Audio Power Amplifier Board Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List