The APA2604CQAI-TRG is a 4-pin, QFN4x4-20A RoHS Audio Power OpAmps manufactured by Anpec. It is a high-performance, low-cost audio power amplifier that is designed for a wide range of applications such as automotive, home, multimedia, and professional audio applications. The device features a low distortion, low quiescent current, and high power output capability that makes it suitable for applications which require high fidelity audio output. The APA2604CQAI-TRG is also RoHS compliant, making it a safe choice for environmental protection.