Just have W4S Music Server-2 connected to Wyred4Sound DAC2. Now I have I2S 24/192 signal to drive DAC2. That is wonderful sound. I have taken a few picture this morning after I tested it.
ipad running "mPaD" to control W4S MS2.
I also use iphone to control W4S MS2. Chinese and Japanese are no problem at all.
Having more hands-on with it now and so far so good.
I think I2S over HDMI cable will give plenty of audiophile grade digital cable to choose from.
LVDS differential I2S over HDMI compatibility is good among different products. In fact, they work closely. The LVDS is balanced signal to support longer cable which is very important to I2S.
Please note that even both source and DAC use RJ45 physical standard does not mean they are compatible. See the following link.