Noise from Rega P3/RB300/Dynavector DV20X-L


I just replaced my Rega Bias MM Cartridge with Dynavector DV20X-L (MC), and now I have to turn the volume quite high (around 1 o'clock - I think this could be due to the .25mV output of the DV20X-L) in order to get to my normal listening level. When I do this, there is an audible background noise interfering with the music which wasn't there when I use the Rega Bias or the CD Player (Rega Planet).
Appreciate if someone can point out what can possibly cause the noise and what I should do.
My setup is Rega P3/RB300 -> ROTEL RQ-970BX -> AUDIO NOTE M2 -> PASS LABS ALEPH 3.
ck_ong
Thank you for all your responses. Forgot to mention that the Rotel RQ-970BX has a switch for both MM and MC. Its MC specs is .21mV / 100 Ohm. I am not quite clear on this - will it be a big mismatch if the DV20X-L spec is 30 Ohm but the phono pre is 100 Ohm?

I am thinking of replacing it with either the EAR 834P or Michel Trichord Delphini. Appreciate advise or share your experience.
It doesn't surprise me that you are still getting noise from the Rotel. Not to say that it isn't a good phono preamp, but it costs a lot more to build a sufficiently quiet MC gain stage. Most MM stages are quite simple and can be powered from a wall wart like the Creeks, NAD, Parasound etc. To get really low noise unit to work with a signal below .3mv is much harder to do correctly. It takes alot more regulation and a real power supply. I use a Naim stageline for MC it costs only $350.00 but the Flat-cap power supply needed to power it will set you back $1600.00
The end product works superbly with low output moving coils down to .1mv
Best,
JC
Immediate solution: Change cartridge to high output.

Long term: Look for another phono preamp,go higher the hierarchy.