and high quality PCB adopts double-layer immersion gold process design to good passing performances of large and small currents High quality active crystal oscillator. Double amps are used, and the amps are powered by positive and negative power supplies. The MCLK of the ES9038Q2M is an clock of 100M, so you only need to input DATA BCK LRCK. Specification: Supported sample 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 holder Material: PCB+electronic components colour: black Package Contents: 1 x ES9038Q2M Decoding 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.