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Product Features: Output power: 3.2W at 4Ω and 10% THD 1.8W at 8Ω and 10% THD I2S sampling rate: 8kHz-96kHz Class D gain optional: 3dB/6dB/9dB/12dB/15dB No master clock (MCLK) required Plug and Play: 35 different clocks and 128 digital audio formats can be automatically configured with a single power supply Suitable for microcontrollers or development board systems with I2S audio output such as Raspberry Pi, Arduino and ESP32 Pin: LRC: Frame clock. Left/Right clock for I2S and LJ modes. Sync clock for TDM mode. BCLK: Bit clock input. DIN: Digital input signal. GAIN: Gain and channel selection. SD: Shutdown and channel selection. Pull SD_MODE low to place the device in shutdown. GND: Power ground. VCC: DC 2.5V-5.5V. Package Including: 1 * Audio Amplifier Module 1 * Pin 1 * Plug