One thing I should mention about my audition of the S1 is that the deep bass was phenomenal. I played some pipe organ recordings with pedal tones in the 30 Hz range and it was very impressive for a 7" driver. However, I will say that the woofer was flapping like crazy to put out that kind of bass. Of 7 or 8 speakers I auditioned in the price range of $8k to $16k, the S1 had the best deep bass of them all.