Audiobugged, thank you for your comments. I do have brass cones under my speakers - when I installed them it lifted the speakers of the floor and gave them a little tilt as I used 1.5 in. cones in front and 1 in. cones on the back. It made the bass tighter and overall music more revealling.
Also, I had just received 3 sets of Sorbothane Isolation pads that I bought here on A-gon. And I placed a set under each of my components. I liked the way my system sounded even before I placed them. So I didn't expected much more improvement, just wanted to experiment. I like the results I got. The music just became even smother than it was before isolation pads.
I would love to hear recomandations on using or NOT separate DAC with SA8260.
Thank you all.