This would explain why.
I don't recall many Beyer 600 ohm jokes. This is something we need to remedy!
To be fair, the last one is a logical conclusion to make if you didn't know that its sensitivity is a high 102 dB/mW. But I see sooo many people plugging them into super amps, when they actually need less juice than any other flagship (sans Grado and Ultrasone).