The problem isn't how bassy it is. It's nowhere near as bassy as the 770/80s. It's that the bass sounds like it was tuned at the driver's limit with no headroom. Almost like if you try to boost it, it'd probably be a mess.
The end result is fine, and I'm sure many wouldn't even notice it, but it's simply not close to the best quality of bass I've heard.
I'm, not saying this to turn anyone off. Every headphone has things here or there that aren't perfect. The quantity of bass is lovely, but I wish it had a more control and refinement behind it. The Pro 900 has considerably stronger bass, and is in complete control of all of it.
Again, that's a small gripe. That does nothing to make me dislike the X1 in any shape or form. It's clearly my fave mid-tier headphone next to the Annies.
Edited by Mad Lust Envy - 6/29/13 at 2:28pm