Reference 3A MM de Capo Be - how do they sound?


For those who have, or have auditioned these bookshelf speakers, how do they sound?  Is there a more mainstream bookshelf loudspeaker that you to which you would compare them? If you own them, what amp(s) do you think they best perform with?

There is a new version available, the MM de Capo Be II, and I am very interested. Reference 3A offers a 3 week trial period, but I read that they take a bit of time to fulling break in, so I’d prefer to know more about them before I make my decision. Thanks in advance.
kcpellethead
@grinnell Thank you for your response. This is helpful

@akg_ca  I thought I’d watched every YouTube video on the MM de Capo Be, but I had not see this one. I had seen previous videos by the same person, so thank you. 
I had a pair of the 40th Anniversary de Capo be in a dedicated acoustically designed room. I ran them with  SS, PP tubes and SET amps.  I really wanted to like them but found the to be lean sounding.  I would read the fine print regarding the in-home trial before you pull the trigger. Well made speaker, but imho a bit awkward looking and not a fan of the nextal finish which was one of the reasons I went with the AE edition. 
@testpilot Thank you for your insight.  Would "lean" also be "cold" or "bright".  The new version II is offered in Rosenut, either satin or gloss, and high gloss black.  
What sound characteristics are most important to you and what electronics will you be driving them with?  These are excellent speakers, but only if they mesh with your personal tastes and other equipment.