I just got my Mad Dogs and I need a portable amp for them, I don't want a amp that is too big because I will primarily be using them for school and the gym. What would you recommend? 

Another thought noise cancellation would be nice to have but is not necessary.

They will be used with my phone I have a Galaxy S III.

Hello every one I am wondering what would be the best headphones for heavy metal, my price range is $200-$350. I like bass in my music and I would prefer to have a single sided cable for the headphones, what would you recommend?

Hello just got JetAudio for my Samsung Galaxy S III and was wondering what some good setting could be? The headphones that I use are MS 400 and the music I mostly listen to is various types of metal and a little a rap.

I am look for some headphones that would sound great with metal and rap mostly metal though, the headphones right now that I am considering right now are the Denon AH-2000 or The Beats Pro by Dr. Dre. any other suggetions would be helpful also, the price range im in is in $300-400.