I wrote it in quotes because it's not really thin. It's thin on a good portion of the amps I see it being used with. The EF5 that Hifiman makes alarmingly does the job albeit with a fair amount of feedback. I've heard it on Lyr too and it delivers in spades. Perhaps I will be moving from LCD-2 to HE-6 soon if I can get over this HD800 kick I'm on now.