[Vainkid]

I tried the senn hd25-1ii I love It's portability and bass.

I have some queries here.

- Any differences between the adidas series?
- Any similar among the shure and beyer?

Planning to start out umamped first, amp will come into picture after few months later

Thanks

 

[UtzY]

The adidas version is exactly the same as HD25-1II but with blue ear-pads. For the second question you should read some reviews and see if you can make a clearer picture. BTW which model from Shure and Beyer are you referring?
 
Here's a start:
http://www.head-fi.org/forum/thread/433318/shootout-89-portable-headphones-reviewed-beyerdynamic-dt1350-added-08-12
http://www.innerfidelity.com/content/sennheiser-hd-25-1-ii-and-adidas-original-hd-25