You have a nice system with very high quality parts. Congratulations!
Some good advice so far, and no one but you can know what is going to make a difference, but as a start:
Try eliminating the power conditioner entirely. You may not need it, and they often degrade the sound. Give it a try and listen.
Try eliminating the equalizer. If you have used it to "tune" the room, taking it our will make a huge audible difference, but listen for increased spaciousness, air, soundstage improvements. Maybe you don't need it. The SS3IC is incredibly complex and all those sliders and switches are doing something even if they're off, or centered, and maybe not so good. But it's up to you to decide!
You didn't mention room treatment. I've spent thousands on treatment and it made a much bigger difference, improvement, than any component I changed. Ever. I hired someone. Room treatment can really turn into a "parts cannon" project and sometimes does as much harm as good.
Have fun! Don't succumb to "audiophilia nervosa". Good luck!
(Nice RtoR, btw. I have a TEAC A3300SX, Great fun.)