[kin0kin]

555, the best budget all rounder phone I've ever heard. If the sr60 is the sweetest low budget phone for grados, the 555 would be the sweetest for senns.

 

[vyeow]

The HD555 headphones really left me with good impressions when i first got them a while ago, definitely better than the HD515.

 

[Geminist]

I second the choice of HD555 ... I own a pair of 555 and truly, the sound is very nice

For the 555, I'm not sure it's real or my imagination, but after around 150+ hours on the phone, the phone kinda "opened" up more and more sound details came out

 

[donunus]

Headphones are weird. Its not just break in time. They also need time to rest. My 580s sounded better for example when I used them after a year of storage in the closet.

 

[milkpowder]

HD555 are amazing. I skipped the HD515 as well. The HD555 are relatively cheap and offer a lot for its price.