I have a Shitts EQ and sometimes it's helpful for really bad recordings but other than that it makes everything sound like a 1970's Pioneer receiver. I put it on line very sparingly.
Those Monster Cable interconnects aren't helping you much either.
Try a tube DAC for your CD player, a non over sampling one would help give you a more analog sound. I have a Kora Hermes NOS/Tube DAC that I absolutely love.
There are a few reasonably priced Tube/NOS DACS out there or maybe look for a used Phillips/ Magnavox CD player that has been modified (its just a switch setting) to NOS mode.
That could be the least expensive way to upgrade your sound.
All the best!