The best replacement for akg k550 is dt770.

The best alternatives to akg k550 are rated as following:
★★★★★  dt770
★★★★  k702
★★★  shure srh940
★★  denon d2000
★★  beyerdynamic dt880
★  fidelio x1
  sony mdr 1r
  soundmagic hp100

Your alternative for akg k550 is not listed? Suggest!
Speaking about akg k550, one probably shouldn't forget about fiio e17.

Other search terms related to akg k550 and their ratings are:
★★★★★ fiio e17
★★ fiio e11
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akg k550
dt770
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