Cx31993 Datasheet [upd] «720p»

The chip is controlled via I2C. Typical registers include:

While numbers tell part of the story, the actual "ear feel" is what matters. Community reviews from platforms like AudioReviews.org and various enthusiast forums describe the CX31993 sound as: cx31993 datasheet

: It is noted for running cool and having minimal impact on a smartphone's battery life, often consuming only about 2% extra battery per hour of use. The chip is controlled via I2C