Welcome to the store! The PCB is designed with a double-layer gold deposition process for excellent current passage, both large and small. Features dual ES9038Q2M chips, one for the left channel and one for the right. Utilizes dual operational amplifiers, powered by positive and negative power supplies. The MCLK for the ES9038Q2M is a 100M clock, so you only need to input DATA BCK LRCK GND. Component appearance may vary slightly from the picture due to different batches, but the function remains the same and does not affect use. Supported Sampling Rates: PCM: 16/24/32 bit 44.1/ 48/ 88.2/ 96/ 176.4/ 192/ 352.8/ 384/768KHz DSD: 64/128/256/512 Signal Input: I2S Output: 3.5mm headphone jack, 2.5mm balanced headphones Material: PCB + electronic components Color: Black Package Contents: 1 x Dual ES9038Q2M Decoding Board