Astra vs Expert Pro on paper

[Matthias]

The most telling issue in my view relating to the Astra is that Devialet's chief research and development engineer, Mathieu Pernod, has now left Devialet having been with them from the start - that is 17 years - and has been the brains behind all Devialet electronics.

I have a Devialet 1000 and did listen to the Astra but did not consider buying one as it was not wall-mountable - an easy modification for Devialet to do but they could not bother with it.

Now that the brains behind the Expert and Astra has left, I would not consider buying the new, but possibly not fully road-tested, Astra product.

I would also need a wall-mountable Astra; but I only have a Expert 250 (non pro).
What is our impression about the sound-quality of the astra compared to the expert? Would you buy one if it is wall-mountable?