For sale JDS labs EL Dac, https://www.jdslabs.com/products/174/el-dac/ USB capable up to 384kHz. USB and Optical isolated using a Pulse transformer, to minimize the possibility of ground loop noise. Overall great DAC, the difference with the JDS OL Dac is better internals and higher max sample rate. Chip = AK4490EQ Measurements: http://blog.jdslabs.com/2018/03/el-dac-measurements-optical-vs-coaxial-vs-usb/ Price: 180 Euro shipped within EU. International possible, will just have to calculate shipping for you. I recommend using this DAC with the optical or coaxical port over the USB for the finest sound. I can sell an M2Tech Hiface Two USB optical converter alongside the device if needed. PM me!