Features: The PAM8403 Class D amplifier board delivers over 90% power efficiency with minimal heat generation, ensuring prolonged device durability for sound systems. This double channel amplifier module features standardized port for seamless prototyping and effortless integration into space constrained electronics. Ideal for sound engineers, and electronics developers seeking amplification for portable speakers, voice controlled devices, or sound equipment projects. Perfectly suited for embedded applications in smart home gadgets, car sound upgrades, miniature Bluetooth-compatible speakers, and educational electronics kits requiring sound reproduction. Extremely high efficiency and do not affect sound quality due to temperature rise. They also do not require heat sinks and occupy. Specifications: Component: ABS Type:B/A Size: Approx.23x24x2mm/0.9X0.94X0.07inch Package Includes: 2Pcs PAM8403 Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.