I've been listening to my XB1000 (fresh out of box) and Pro900 (pretty burnt in) back to back for a bit. It's obvious even to a layman like me they have different presentations, but I'm struggling to adequately describe the differences in words.
My initial thoughts are that the Pro900 is more detailed in the highs and sounds more clear/transparent overall. The XB1000 sounds more spacious, but slightly muddy in comparison, maybe due to the smoother highs? As for the mids/vocals I'm really not sure how to describe what I'm hearing lol.
In the bass, the XB1000 seems softer. It's like being surrounded by a cloud of bass rather than the Pro900's more focussed, tight bass. The Pro900 definitely hits harder. For my genre tastes, the Pro900 is more suited to DnB with its powerful, fast bass whereas the XB1000 would be for dubstep due to it's slower more voluminous bass.
I think the XB1000 can be played slightly louder and for longer than the Pro900 before it would become fatiguing/headache inducing.
Take these impressions with a pinch of salt because I probably have no idea what I'm talking about! I've not started comparing the XB1000 to it's little brothers yet, but I will at some point.
