I am currently running a gygabyte z97x-UD3H with 980 sli hooked up to a sony bravia xbr850c 4k tv with an hdmi cable. From the tv I have an optical cable (my receiver is not 4k compatible) going to a 5.1 pioneer vsx 520 receiver, which is hooked up to polk speakers. My question is, would I get much of an upgrade in sound quality if I added a sound card to my motherboard?