In that price range a pair of Sennheiser HD800 phones driven by a PS Audio GCHA amp would yield world-class performance.
Headphone amp and headphones... ?
I'm thinking about buying a headphone amp and headphones... will i hear a noticable difference if i 'm in the 1500.00 headphone range and around 700.00 for the amp? I have Rouge audio 180 mono blocks and the 99 preamp. The way it is now i can't get any sound / volume out of it with just the headphones