The MAX98357 Pulse Code Modulation (PCM) plug-and-play speaker amplifiers take advantage of the flexibility of Maxim's pinout. 35 different clocks and 128 digital audio formats can be automatically configured with a single power supply. Output power: 3.2W at 4 and 10% THD 1.8W at 8 and 10% THD;I2S sampling rate: 8kHz-96kHz Suitable for microcontrollers or development board systems with I2S audio output such as Compatible with Arduino Raspberry Pi, ESP32 the device uses a high noise immunity digital input with high jitter tolerance. It also provides excellent electromagnetic interference suppression, allowing long-line connected speakers without the need for external filtering. This DAC was a cheap and brilliant way to improve the audio quality of your esp32 project. It turned awful sound quality with horrible background noise to incredibly clear and enjoyable sound