Power supply voltage: DC 5V-10V! For example: VCC to 5-10V GND to GND. Be careful not to connect the power supply in reverse, otherwise the board will be damaged. If the voltage exceeds 10V, the board will also be damaged! In addition to VCC GND connected to the power supply, the remaining GND LRCK DATA BCK is connected to the I2S signal input (this board does not need to connect the internal PLL of the MCLK chip to generate the MCLK clock, which is much better than using an asynchronous clock. The internal PLL upsampling is only used to generate the internal MCLK clock and cannot increase the audio sampling rate)! Supports direct input of I2S format/left-justified signals (manual switching is required)! Supports up to 32bit data 384K sampling rate! Signal-to-noise ratio 112db, distortion -93db, direct output of 2.1V RMS audio voltage, high frequency without burrs, low frequency full, good dive. Super ES9023! such as VCC connected to 5-10V GND connected to GND. Be careful not to connect the power supply reversely, as it may damage the board, and if the voltage exceeds 10V, it may also damage the board Power supply voltage: DC5V-10V Colour:As Shown Material:PCB Package Contents: 1 * DAC Decoder Board 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.