Voltage: DC 9-15V Output terminals: can be connected to the amplifier, earphone, 3.5 terminal can be connected to headphones Perfect seamless use with the interface, PCM DSD switching without defects. ES9038Q2M parameters are more complete, 129dB DNR -120dB +N Easy to install. Pin Description: Board interface front side up, from top to bottom in order: GND, vacant, LRCK, BCLK, DATA Input support: Coaxial: PCM44.1k-192k 24bit/ DSD64 Optical: PCM44.1k-192k 24bit/ DSD64 I2S/DSD: PCM44.1k-384k 32bit/DSD64, DSD128, DSD256 I2S/DSD pin definition: PCM_BCLK-DSD_CLK, PCM_LRCK-DSD_L, PCM_DATA-DSD_R Because ES9038 MCLK is an clock 100M, so only need to input DATA BCK LRCK is enough very convenient. Polishing CD DVD old decoding effect is very good. Delicate and rounded, very good extension. Default with NE5532 op-amp, to upgrade the op-amp customer service can choose their own audiophile op-amp, high-precision active crystal oscillator Audio input settings. J1 shorted, coaxial input J2 short, optical input J1 and J2 are not shorted, I2S input Filter setting: J3,J4,J5,J6 not shorted, filter = reflective fast roll-off filter J3 not shorted: J4 shorted, filter = brick wall filter J5 shorted, filter = Corrected minimum phase fast roll-off filter J6 shorted, filter = Minimum phase slow roll-off filter J3 shorted: J4 short, filter = Minimum phase fast roll-off filter J5 short, filter = linear phase slow roll-off filter J6 short, filter = linear phase fast roll-off filter Volume control: Volume: 1-2 short for mute, 2-3 short for maximum volume. Colour:As Shown Material:PCB Package Contents: 1 * ES9038Q2M I2S Decoder Board 1set * Wiring Harness 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.