[MZ15]

I've owned my HE-400's for a bit over a year and love them. EDM sounds great on my current headphones, but I keep reading about the amazing bass in the Ultrasone Pro's and have wanted them for a while.
My HE-400's are the only mid/hi headphones I have listened to, so I want to know if getting the 900's will give me a noticeable difference when listening to bass heavy songs, so that I can switch between both depending on the genre of music I feel like listening. 
Thank you in advance!

 

[hgreg]

I've been a happy listener of these for over a year now, almost daily. I can't compare them to anything full-size, but they reproduce the house & techno I listen to very well. Bass sounds great, I can't imagine how any other headphones could sound better, especially at this price.
 
I usually listen through a Fiio E7 or an Audioengine D1, but to perfectly honest, they sound almost as good straight from my phone (Samsung ATIV).
 
Audition if you can. I bought them without doing so, but the leap of faith was rewarding.