I think your pairing one great amp with one great set of speakers, the Auditors are on my list of possible upgrades. Depending on what you consider a "medium" sized room and your musical tastes you may find you need more low end. I have always thought the Auditors did very well on the low end for their size, that being said i recently heard them with a REL B1 running on a tube McIntosh amp (i dont recall the model, it wasnt a 275 though) and was very happy with how it sounded. If you find you need a sub i would look at REL B Series.
