Board power supply: DC 9-25V (2 wire) or AC 7-18V (3 lines) Output terminal: RCA + 3.5 terminals may be connected directly to the power amplifier, amp, headphones can be connected directly Because the ES9018 is independent of the MCK clock 100M, so only you need to enter the DATA BCK LRCK sufficient very convenient. Polished old CD DVD decoder works well. Delicate mellow, very good extension. Default with NE5532 op amp, op amp to upgrade customer can choose their own fever op amp No sense of resistance using VIS cylindrical resistor, precision active crystal, double-sided Immersion Gold PCB very fever Support for IIS-32bit 384K / DSD64 128 256 Size: 72X63mm ES9018K2M parameters fairly complete, 127dB DNR -120dB THD + N is not the old chip can be compared. Can AC-DC power supply, easy to use Seamless interface with the use, PCM DSD switch free of defects. Colour:As Shown Material:PC+metal Package Contents: 1 x 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.