I'm not an audiophile, i'm a beginner in this whole world. I just set up 2ea WIIM Pro's. I have one going into my vizio powered sourround system via optical cable and another going into an AIYIMA A07 via RCA cables then to some passive speakers. When changing the EQ I do not notice any changes to the sound. Is there something I'm missing that I need to do when changing the EQ levels?