Ok, I'm gonna go out on a limb here and recommend a tt system. Keep in mind these are similar components to what the OP has, only upgraded and better sounding. IMO. And all within his budget.
Turntable: Rega P2
Cartridge: Nagaoka MP-110
Phono preamp: Schiit Mani
I have heard all my recommendations, and also what the OP currently has. I know there can be many other worthwhile recommendations, but these are some I am familiar with.
Just my 2 cents worth, nothing more, nothing less.
Hope I can be of some help to the OP.