I have been listening to a pair of KG-5.5's for a month or so, now. I have been shocked at the improvement over what I felt was a decent pair of Polk Monitor series speakers(Monitor 50's). A good kind of shock, mind you, but seriously very nice sound. It is a matter of time before I go the Heritage route and, shoot, can tubes be far behind(although I do like my Sansui 771, with the Hagerman phono preamp)??