Again, thank you for your responses. I have not disappeared from the site.
I respectfully asked for opinions from fellow members to guide me in improving my listening experience. I read each member response. When someone asked me a question that I could answer, I did so. By the way, it seems to me that after I upgrade my DAC , the next step would be to add an equalizer to boost certain frequencies to minimize the effects of the Fletcher Munson Curve. If that does not do the trick would consider a speaker upgrade. It is difficult to obtain advice today from people that have no financial interest in their opinions. Thank you, again.