Outlet wiring question

Hi everyone,

I hope you are all doing well.  I have installed a couple of upgraded outlets recently with very positive results.  I recently moved my rig to another part of our apartment, and I planned to install the upgraded outlet in the new location.  However, when I took the outlet out of the wall, I discovered that it had six wires going to it rather than the customary four.  It appears that the additional wires are for a light switch that is in a storage closet on the opposite side of the wall.  There are four wires attached as normal to the four screws on the sides of the outlet.  Then, there are two wires that go into holes in the back of the outlet.  

I know nothing about electrical wiring, so I thought I'd see if anyone had some guidance.  Does this set up preclude the use of an audiophile outlet?  Are there any that would allow this type of extra circuit to be wired in?  I appreciate any suggestions that you have.  

Thank you,
Scott