Have just been listening to a pair of Wharfedale Diamond 9 . SR , Rear Surround Speakers , and i must say they do sound very sweet , Have run them thru a Rotel Amp and Also a Technics SU - V9 , Considering the size and their Function , as Rears , They get the thumbs up from me , I have two pair AR Bookshelf which i have been listening to for many years , so with some comparisons , I do like them ,, and they can handle the power , cheers ,,