Sophia's are very musical, beautiful to look at, and easy to work with. I feed them with all Krells (KPS-28c, KCT, 400cx). They don't go as deep in bass though - I supplement mine with Rel Stadium III subwoofer and very happy. You can pick up used Pup VI, will go deeper in bass (I would not mess with Pup V) for around $8.5K to $9K.
