The CS4334-BS is an audio digital-to-analog conversion chip produced by CIRRUS Semiconductor Company. It features a simple interface, stable performance, and ease of operation, and has wide applications in embedded systems. Additionally, since the signal of WAVE digital audio becomes relatively weak after being converted into analog audio by the CS4334, an audio power amplifier needs to be added. This article selects the TDA7050 low-level mono/stereo power amplifier from PHILIPS.