@jay73 +1
Which cartridge do you have installed?
I do owe the Moon 110lp since about 10 years and I am happy.
End-user adjustable impedance loading (100 and 47k ohms).
End-user adjustable capacitance loading (0 and 100pF).
End-user adjustable gain settings for moving magnet (40dB) and moving coil cartridges (60dB).
If you can find a used one for around 300 Dollars, grab it. It would be an upgrade, I believe. Well invested money IMO
Otherwise, you may want to go with the Pro-Ject Phono Box or stay with the AT PEQ3
It depends from the cartridge.
Cheers!