I have a Gustard A26 I’m using in a home office system consisting of TeKton Lore speakers , a 1970s refurbished Pioneer 5590 receiver and DIY server ,adding the LHY OCK 2 as described by Kereru caught my interest.
Regarding i2s cables my experience with them has been limited though I did use a silver I2s cable the North American distributor of Rockna Audio uses himself , a DIY cable his partner we’re experimenting with a 30 inches in length at the time I had the Rockna WaveDream Net server and Holo May dac .
I also used USB with both connected was able easily switch between the two cables . It is recommended i2s to be used with Rockna components and yes the i2s did sound marginally better then USB.
Anyway I don’t mean to contradict those beliefs shorter i2s cables should be used exclusively the importer of Rockna knows his product line very well he did not mention this .