Cardas Caps on unused digital jacks?


I have used them on all of my unused analog RCA jacks. I have one pair of unused XLR jacks that I plan to buy Cardas Caps to cover.
But what about the digital jacks. I have not used caps on any of them. Should I be covering them too? How about the unused "video" jacks (all kinds) on the digital transport. It is the EAD t-7000 so it also plays LD's, which I don't do. The EAD drives my D to A via AT&T glass.

Opinions are appreciated.

Richard
drrdiamond
I use Cardas Caps too. All the unused inputs on my pre have them. I threw one on the digital out of my cdp and didn't notice any sonic difference. I did it mostly to keep out dust.
Drrdiamond, could you please share any sonic differences you may have noticed after installing the caps thus far?
Gunbei- that's the reason I use them I don't think they changed the sound for better or worse, but it keeps things neat and clean.