What is the difference between headphones with different impedance?

Question

Headphones

There are studio headphones of the same model, but with different impedance. Headphones with low impedance allow you to listen even from your phone or player. Headphones with high impedance require a good sound card and some kind of amplifiers. To the question "What's the difference?" the seller replied: "Headphones with higher impedance allow you to use a larger frequency range." But since both of them are of the same model (but this is not accurate), and both have the same frequency range in the characteristics - is it possible that the seller has not said something yet?
What is the difference between headphones with different impedance and how does this affect the sound quality?

Answer 1

Different resistance is designed to connect to different amplifiers. As a rule, professional amplifiers in mixing consoles are designed for headphones with high impedance, while a linear amplifier in a conventional sound card will be weaker.
The more impedance the headphones have, the more swing the amplifier output needs to drive them - allowing you to create a more linear amplifier at a lower cost.
In short, if you put studio headphones into a computer, they will sound, but quieter than they could sound if they were put into normal equipment.

Answer 2

What's the problem with googling?
The first link to habr .

Answer 3

The lower the resistance, the greater the current of the output stage of the amplifier, and indirectly this is its power. As a rule, professional amplifiers have a lot of power, so they can afford to connect a low-impedance load (4 ohms, we are talking about speakers). Computer sound cards are low-power, so they are only suitable for high-impedance headphones (with a high current, the output stage of the board will simply burn out).