1. Excellent Compatibility: Supports a wide voltage range of 3.3V to 5V, compatible with nearly all microcontroller platforms. 2. Flexible Format Handling: Supports a variety of 125 data formats with simple pin configuration. 3. MCLK-Free Compatibility: Built-in PLL (phase-locked loop) allows operation even without an MCLK clock source (e.g., for ). 4. Simplified Connection: Clocking is automatically handled by default. Simply connect the data, word select, and bit clock lines. 5. Quality: Built-in ferrite beads, regulators, and bandpass filters pristine sound quality. Professional Filtering: 20-20kHz frequency response with no attenuation or distortion, delivering professional-grade sound quality. Functional Expansion: Supports mute control and voltage reduction filtering. Color: As Shown Material: PCB Package Contents: 1 x I2S Stereo Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.