So very limited volume, that in the car nothing more is heard.

When traveling, we use the iPads with holders in the car.
So that everyone can be satisfied, each has his, and with headphones. Here came gradually complaints that you hear nothing.
Checks whether the volume is turned up, yes, there is really little or nothing out. Especially with some driving noise in the car!
So the volume limit in iPad checked or removed. Did not help. Sound set to maximum volume. Did not help.

Result: at maximum volume the sound is still so low that there is simply not enough going to a movie to hear, see.

The way I see it, I'll go to the listeners and the resistance to solder out, so that you then also in the car which can be heard! Because the headset is indeed dampened with a resistance and not volume limited as indicated.
a pity!

No buy recommendation.

Addendum:

I have now examined some back and forth, and discovered when the SMD resistor simply bypassed, then the headphones run normally. Pull ear pads, take small Phillips screwdriver and screw on and off you go. So they are no longer dampened, as a result, the sound is loud YES or louder. The so-called. Protective function is no longer available, but the dwarves can now watch movie in the car, and that has to go Yes, finally!
Basically, I find the manufacturer's specification FALSE since no volume limit exists but a general damping.