I have a master 7 and I was considering upgrading/tweaking. I've lost track of this thread and not quite sure what I need, i've noticed Kingwa has released the following 2 products since I last checked in.
http://www.audio-gd.com/Pro/dac/DI2014/DI2014EN.htm - DI-2014
http://www.audio-gd.com/Pro/diy/I2Skits/I2SEN.htm - I2S Connector
I currently connect the Master 7 to my server directly via USB input built into the unit. Do I need to purchase both...