the geraeuschunterdrueckung works well when flying, I appreciated so the 70% will reduce the noise level. piano you can hear pp is possible to at least be guessed.
Unfortunately, the headphones are but against 'boarding music', with which one is in some zwangsbeglueckt airlines still, absolutely powerless. If there were headphones that one the savings, I would buy it immediately. They should be a little more expensive still.