VS1103B-L is a low cost, low power, single chip CMOS audio processor from VLSI. It is designed for portable audio applications where low power and quality sound are required. It features built-in stereo digital-to-analog converter (DAC), digital signal processor (DSP), dynamic range controller, and internal low-power digital audio effects engine. It provides superior quality sound with minimal power consumption, enabling designers to achieve high levels of audio performance. VS1103B-L also offers a variety of functions such as audio decoding, multimedia playback, karaoke, music synthesis, and surround sound. In addition, VS1103B-L has a host interface, allowing users to directly interface with a PC or microcontroller to enable software development and audio applications.