A lot of my headphones are comfortable, yet on the heavy side, so when I first tried YH-5000SE, it was a breath of fresh air, they’re light as a daisy, pictures also don’t do them justice.

If your ears are ringing, lower your volume please. You don’t need to hurt yourself to get your job done.

For measurements, you’re asking in the wrong place. If I understood you correctly, you’re asking for a differentiation between what amps do versus what dacs do?