To further clarify the question, I am a long time owner and admirer of Wilson speakers. Have had Sophia 1 for a number of years and obviously WP7s for a few years as well. Set up by the dealer and modified slightly many times by me, including using different head angles. I have spent hours listening to all of the current Wilson models including the WP 8s, Maxx2s and Alexandrias (although not the newest version) at various dealers with the best amplification from the likes of Levinson, Spectral, Accuphase, Simaudio Moon and McIntosh (which I own -Mc2102 and C1000 tube pre) So I am v familiar with the modified Focal dome used in these models. Although I understand that the modifications of the tweeter and crossover continue, I detect on all models and in all circumstances what I consider to be a beautiful, highly accurate and incisive but by no means reticent top end . However, I do believe I hear more air in a small number of other top end designs (eg Magico, Focal, Kharma, Marten). Now, these designs don't use titanium domes and have much different voicing than Wilsons, voicing that perhaps is more suited to supplying a little more air around the top end --I prefer Wilsons to all of those. The only very minor I believe I hear is a slight lack of high end air. Maybe it's just me. Hence the inquiry. Has anyone experimented with a supertweeter and heard any salutary result with Wilsons?