anybody upgrade from Dynaudio Special 40 to Heritage Special?

Listen to the ATC 19s. $3,300.

on my shorlist for the future

Keep the 40’s IMO the heritage are not worth the price to upgrade. I traded my 40’s for the heritage and I am thinking of selling and buying another pair of 40’s. I am using a passlabs 250, so it’s not an amp issue. I will say, the heritage is more transparent than the 40. In my room the 40 has a much puncher and impactful bass, that I miss. The Heritage is also ruthless to the source. Besides the Transparency the heritage has a much large soundstage then 40. 

`Mark On HiFi` is a youtuber who has spent a lot of time with three Dynaudios, the C1, Heritage Special, and the Special 40. He has videos comparing them. The C1 were were long term speakers, he tried the 40s, and ended up Heritage Special.

I enjoy his take and it’s an enjoyable watch for me:

Heritage Special vs C1: https://youtu.be/nQWMHUGDqEI

Dynaudio C1 vs Special 40: https://youtu.be/y7SIjixTsMA

Deciding on the Heritage Special: https://youtu.be/ZV56xgUqIhA

soundstage is enormous on the HS...if you find that lacking in your 40s, it could be worth the upgrade on this factor alone.

Note: I think the market may have softened a bit on the HS, meaning if you can find one it may not come at the same premium as it did 9-12 months ago.