TYATYA
Headphoneus Supremus
Do it any times listening.The cramping force is easy to adjust as the headband is metal, bend it inward or outward will help adjusting the cramp....
It will elastic deform back to normal ( I want it not to does that) on the next use.
8pm to 1am listening continuosly. I dont remember amp's volume position..... I turn it time by time..... my ears seems no tired with volume of this headphone.
Just know I am listening quite big when some resonance heard, and touch to metal mesh it is vibrating....
Times to stop.