So, my current setup runs like this:

Laptop --> USB --> HRT Music Streamer II --> Schiit Asgard ---> Beyerdynamic DT880/1350.

I would like to make my office sound setup a little more versatile and am looking for suggestions.  Things I'd like to add:

1)  Turntable - very interestedin the Pro-Ject Debut Carbon

2)  Amp - this is where I need serious suggestions.  Something small, but versatile.  Would the Emotiva mini-X work?

3)  Bookshelf Speakers - Music Hall Marimbas?  I'm looking for something on the affordable side.

I suppose, what I need the most help with, is how to set all of this up in the most efficient way possible.  It would be nice to have the versatility to listen to my turntable or computer via my Asgard/headphone combo or via the speakers without having to switch cables.  Would I need an amp with multiple RCA out and in? 

Any input would be very much appreciated.

Thanks!