obsidyen
Headphoneus Supremus
Maybe someone can bring along some Oppo and/or Hifiman planars... @hrklg01 would love to measure them.
Some modded Fostex T50RP might be interesting in this context as well...
I could bring Oppo PM-2 if the meet was on 28th. I'll fly to Vienna on the 27th so I probably won't make it.