[grimr3aper]

can you give me some recommendations 

 

[ProtegeManiac]

  can you give me some recommendations 

 

I did. I hinted that you look into this:
https://us.focusrite.com/usb-audio-interfaces/scarlett-solo#techspec
 
And you can hook that up with something this:
https://www.amazon.com/dp/B00DI89IQS?th=1
 
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If you're planning to drive headphones with the same device though I'd get the Schiit Modi2 and Vali2, and one extra pair of short, thin cables like the PYST from Schiit to hook up the Modi2 to the Vali2.

 

[Tablix]

If you really do have a ground loop issue after using balanced cables and and audio interface you can buy a really cheap little box to solve it :- https://www.music-group.com/Categories/Behringer/Signal-Processors/DI-Boxes/HD400/p/P0387
 
BTW I can tell you for sure that if you can afford in the future hooking up a KRK sub into your setup, really free's up the main driver and the mids sound so much fuller for it.  A friend of mine has this set up and I love it, actually sounds better than my RP6's and has made me seriously consider investing myself.