What is your definition of "new"? I very much doubt Axiom takes, say, an EP600v2 and makes sure it sounds like an EP600v2. First, what is an EP600v2? That version under-went many changes. Second, I doubt they've maintained the test jigs from the EP600v2.
Actually, I spoke to Ian about this and he indicated that they measure against the measurements captured during the original development of the products. In that way, he baselined my AX3's against the original baselines.
With the advances in technologies, I am sure they can compare the performance quite easily, and adjust as required.
