Last year we had the living room spruced up so took down all of the stereo equipment. I just bought a new 75" Sony X900H and need to add sound to it. I am not sure if I should dust off the equipment I have or upgrade some or all of it. I suspect my receiver is lacking with some technology but not sure. From what I remember, I used to have to crank the volume up to like 60 to get any real sound. I can find a budget to upgrade but do not want to go crazy.\n\nHere is what I was using - most was bought on budget not necessarily on what worked with each other. At the time my biggest concern was trying to get sound without having to crank it. I had some in ceiling rears but have rearranged the room so those are out of the mix now. I am not interested in relocating those.\n\nPioneer Receiver - VSX920\nPolk Monitor 70 Series II tower speakers\nPolk CS20 Center Channel\nPolk Powered Sub (can't get to it to get the model number)\n\nWhere would I get the biggest bang for my buck upgrading. I would like 5.1 and maybe dabble with Atmos. Would like to stay in the 2k range.\n\nThanks for looking.