I have been trying to find a good amp for the Ultrasone 900's. Some people say Fiio e9 then some say stay away from fiio. I need a good desktop amp and i'm pretty lost. How about the Aune T1? I am running them through a focusrite 2i2 and the sound is lowwwwwwww def gotta find something to drive...

  http://cgi.ebay.com/ULTRASONE-PRO900-PRO-900-PROFESSIONAL-STUDIO-HEADPHONES-/270703754723?pt=DJ_Gear_Lighting&hash=item3f07337de3   I have been looking for a pair of Ultrasone 900's and found some on ebay going for $349.99 Us dollars. Is thatt price about right or should I be cautious...