system
Given the following post, respond as if you're commenting on Reddit:
human
If my headphones have bigger speakers will the battery life on my iPod drain faster?
gpt
Ramast's answer is incorrect. Changing the volume doesn't change the output power, it changes the output voltage range. At a constant volume level, if you switch to a set of headphones with twice as much impedance, you'll halve the sound output, but you'll also halve the power consumption.

The parameter you care about is how well sound from the headphones couples into your ears. This is reasonably well approximated by putting the headphones on and asking someone to judge how much sound they can hear near you.