C J Premiere 11A versus Music Reference RM200

I currently have a CJ 11A driving a pair of two -way speakers with a Scanspeak woofer and tweeter. I am moving to a larger room and have to change speakers to a two-way with an MTM configuration which has an impedance down to four ohms. I don't think the CJ amp will drive this speaker very well with the low impedance so I am thinking of going to the hybrid Music Reference RM-200. My question is: will the Music Reference amp drive a two-way speaker with an impedance that drops to four ohms and how does the sound quality of the Music Reference amp compare to the CJ amp? Is this a good amp swap or are there better alternatives that won't break the bank? Thanks for any advice given. George