ultrasone pro 900 vs 900 i

[leo01]

is there any difference between the 900i and the 900? I am looking for better soundstage and bass. Which one has the better soundstage and bass between the two?

 

[leo01]

bump

 

[serman005]

  bump

I've been to the Ultrasone website and I only find a 900i there. There is no 900 listed. I am wondering if the 900 is an out-of-production product, replaced by the 900i. There is nothing on the site indicating what the difference between the two may be  No mention of the 900 at all. That's what I learned..   ---)

 

[leo01]

amazon has both. just not sure which one to buy. any help would be appreciated
 
https://www.amazon.com/Ultrasone-PRO-900-Professional-Closed-back/dp/B001F00F0E/ref=sr_1_2?s=electronics&ie=UTF8&qid=1489371851&sr=1-2&keywords=ultrasone+900i
 
https://www.amazon.com/Ultrasone-900i-S-Logic-Headphones-Black/dp/B0188Z2I76/ref=sr_1_1?s=electronics&ie=UTF8&qid=1489371851&sr=1-1&keywords=ultrasone+900i