Another vote for looking at getting a better DAC and then maybe a Subwoofer or two. I have one SVS SB 2000Pro one the wall behind my listening position. My speakers are 8’ in front of me and the subwoofer is about 7’ behind and it blends in so well that I will not be adding a second to the system. I got lucky, because most rooms need at least a pair to get smooth even bass.
All the best.