What Preamp for Music Reference RM-200

Hi, I'm seeking advice as to what Preamp I should be looking for. I have a Music Reference RM-200 it is strickly balanced and I'm running ProAc Response 3 speakers. Music tastes range from Bach to Benatar. Personal taste in sound are deep layered sound stage,low level retrieval, 3D sounding, Involving. Any help along these lines will be deeply apreciated.
Thanks
Mike.