Sarcher is correct. Verify that you have the table connected to the MM phono input and that you have set the correct capacitance for the tonearm/cartridge combo. Impedance on the MM input is fixed at 47K ohms.
My C2300 sounded magical with even with my antique Pioneer PL15D / Ortofon 2M Red right out of the box. It only got better with break-in and was immediately equal or superior to digital sources.
If you still have concerns after checking connections and preamp trim, then it's time for a chat with the turntable vendor regarding cartridge set-up and / or a possible warranty claim.
My C2300 sounded magical with even with my antique Pioneer PL15D / Ortofon 2M Red right out of the box. It only got better with break-in and was immediately equal or superior to digital sources.
If you still have concerns after checking connections and preamp trim, then it's time for a chat with the turntable vendor regarding cartridge set-up and / or a possible warranty claim.