[Mostafa1000]

I just need to know he difference between Ultrasone HFI-580 and DJ1 from these points :
 

1. how they sound in highs and mids and bass
2. the comfortability of each one
3. how gives more tight deep powerful bass
4. the box contents of each one (and the diffrence between them)

 
and i need to know what type of cord is best for listening from a pc the straight or the coiled cord

 

[Parall3l]

The DJ1 and the 580 uses the same drivers.The DJ1, however, has a 3db higher sound pressure level.Other than that the only differences are cosmetic. The hfi580 uses a straight cable where as the DJ1 uses a coiled cable

 
http://www.ultrasone.com/index.php/en/products/hfi-580.html
 
http://www.ultrasone.com/index.php/en/products/dj-1.html