I didn’t realise you’d also had the Pro. I guess I’ve been operating on the lazy assumption that Pro = better, even if the frequency response is superficially less aligned with my tastes.
I’m in NZ and have no way of demoing a pair, and the conclusion I’ve come to for the time being is that there’s a bit of a Focal Clear-style elevation in the mids around 1-1.5k (based on Crinacle’s charts) which possibly means the vocal presentation is a bit thin for my tastes. I can - and do - EQ, but the purist in me wants my endgame headphone to be one I can enjoy as the manufacturer intended.
Have you noticed any significant differences in the mids between the Pro and non-Pro? Do the higher relative bass and low-mids on the non-Pro give vocals a bit more richness and weight?
Just got my portable in for work and travel, had to give back my ifi nano BL. This should suffice and took a lot of digging to find it new with warranty.