Headbander
New Head-Fier
You cannot drive the Abyss 1266 with a phone and due to their shape you cannot use them lying down as you will not be able to get the seal. They have no clamping force and they effectively just lie on top of your head. You adjust them by narrowing or enlarging the headband. I guess, if you really, really want, you could but as soon as you move they will fall out of position and you would lose their signature sound.