Hello. I have a rather high-end Samsung TV. S 90 C. I just bought Wiim amp to go with it about a month ago. The amp sounds fantastic with streaming and USB. However, when I listen to my TV through HDMI or optical, the quality is just not there. However, the TV does sound good through my Bluetooth headphones. Do the TV speakers sound good? Who knows? Worthless. HDMI and optical both sound the same through the Wiim, by the way. Sort of muddy and lifeless. How do I know if the problem is the TV, or if the problem is the amp?