Non-flabby bass, along with non-bright treble. I have heard many many speakers with a great high end and midrange, but fuzzy, flabby bass that I don't want to spend years trying to correct with room treatments, different amps, cables, power cords, etc. The best combination of bass and treble I heard was the Genesis 500's, which I bought several years ago. I have never had to treat my room in any way.