I like the way you put it, a more mature take on the family sound. Another way to put it would be a more realized version of the designers intent because that is exactly what it is. It is the best Didier can do at this point in time and when I say do, it is literal. Every Autographe is assembled by Didier himself hence the name. Sonically as reported earlier, the Autographe is just a bit more extended, gives a bit more texture and is a bit more dynamic. The EERA hallmarks of flow, image density and sense of space are all still there. So yes I would say that the difference is subtle but can be musically significant depending on the track played. Strangely enough the difference is most pronounced on simple small scale music.