Samson SR850 by Ramm Darkened
The sound quality on this thing is simply amazing. The crystal-clear treble, powerful mids, balanced bottom end, wide sound staging you can get for a cheap price. The way to use it is very easy, just plug this and drive it into a headphone amp.
I have compared this to a higher priced model and this one sounds just as good.
The semi-open construction feels great for mixing or just enjoying some music.
Really recommended for musicians on budget.