Marco, I loved the Caravelles, as you know, but I moved. New crib was much much larger, plus high ceilings. Not enough speaker for the space. Wanted a small foot print and a full range speaker. Almost impossible to find. And then came Zu. 101db left the door open for tubes. Wasn't even considering tubes. Was happy as anything with my YBA Passion, but another Definition and Druid owner encouraged me to rethink the idea of tubes. The rest was history. 53, and still teachable. These Definitions are very exciting. Never had an efficient speaker in my life. Tubes were never in the picture. Couldn't afford what it would take to drive what I had in the past. thanks for asking...good to see you back on the 'gon Marco...warren