What SQ value does a high end stereo preamp add to a network player?

Thanks, very helpful but its part of a ht system so i need a means to switch between whats using speakers.

Only use network player and av processor, ie no cd or turntable.

can i use x1 as a pass thru from ht processor for mains?

I like the goldpoint, too bad no remote.

so with only one source to a stereo pre, it seems unnecesary to get a pre.  
So if only these quality switchers had a remote.  

Yes, i have seen this and with remote.  Seems ok. Considering.

it looks like crap, why is that?  And why not hear about it very much.