Now that we are done with the form factor, I shall explain why you should go in for the HD415. For starters, you should know that these are not studio headphones; they're marketed for regular purpose. However, Sennheiser, not willing to depart from tradition, has given the HD415 some features from its high-end headphones.
I have always maintained that Sennheiser offers true sound when it comes to sound reproduction, and the HD415 reaffirmed my faith. The mids are clear and resounding, without interfering with other frequencies. For that matter, every frequency came out purer than I thought it would. The highs are very clear, and you won't have worry about damaging your precious eardrums. Of course, I can't say this often enough – do NOT listen to music at high volume, or you'll surely go deaf someday!
The Sennheiser HD415 costs Rs 4,500 and is available everywhere. Grab it while you can. I've already bought one for myself, so you can rest assured in the knowledge that I don't just preach, I also practice!
Compatible? These headphones are compatible with any player that feature a 3.5mm jack (every one of them worthy ones do btw). Also, if you are an audiophile (I hate that word), and like to please your ego by equipping your rig with an amplifier, the company bundles a 3.5mm - 5.5mm converter with the package, for added measure. So there!! 
