These are a very dynamic speaker with high efficiency. The sound, especially on the top end was very extended and smooth. The accompaning sub-woofer," made for an interesting full range sound. They really had an ability to get into ""the gestalt"" of the music event. They appear to work well with moderate power"," thus avoiding the need for monster amps and their excessive prices. The ""Audio Aero"" electronics", were also a major contributor to the sound, Robert's comment about musicality is spot on.