I would say my budget is around 4k? I think at that price I can get 430HAD,which is a popular choice I guess.

Recently I picked up an HD800S, which is an absolutely beautiful can since I like wide soundstage and analytic sound. The current DAC/AMP combo I used is the Yulong DA9. But I'm considering to upgrade my AMP and probably DAC later for my HD800S (and many other hi-end cans to come I guess). I...