Volume seems like the wrong metric when airpods are full of batteries and electronics which are very resource and energy intensive. Energy production cost would

Volume seems like the wrong metric when airpods are full of batteries and electronics which are very resource and energy intensive. Energy production cost would be better. With the AKG headphones you could repair them if you felt like it. Apple doesn't let you choose. A good pair of headphones could last decades while the glued in battery in the airpods gives it a definite lifespan.