Sorry I haven't responded sooner. I have been traveling since the speakers arrived just after the 4th and I'm currently in Alaska. The good news is I put a CD on repeat and have between 250 and 300 hours on the 11s. I've just started to listen critically. I can tell you that the level of detail, especially in the mids and highs is phenomenal. The soundstage is deeper and wider, and musical presentation is fuller from top to bottom if you know what I mean. Imaging is more precise too than the DA-1.1s which are outstanding speakers in their own right, but the 11s take the sound to a whole new level.
I'll be home thursday and will spend some time listening. I haven't boxed my DA-1.1s up so I can do some side by side comparisons. I have not listened without the BOWs but will do that.