I see that most have responded to tweaks. I'll go in another direction. I have owned and listened to many, many pieces of audio gear in my room in the last few decades. The one piece of gear that stands out above all the rest as shockingly disappointing was a Mark Levinson No. 38S preamp.
I was stunned by how poorly it performed in my room. My wife, who rarely comments about changes I make in my system said "What happened? This sounds worse than my car radio!" LOL!! The gent I sold it to loved it....go figure. I suppose it is all about system synergy.