If you connect these headphones to a phone, to a laptop without an external sound card or to a player, the sound will be quiet enough even at maximum volume, and this is not a minus of the headphones, but their use is not intended. They are designed to connect to an external sound card or amplifier (I use a Focusrite Scarlett Solo sound card). To comfortably listen from your phone, look for headphones with an impedance of no higher than 16 ohms. With proper use, these headphones are not only comfortable to work with sound, but also pleasant to listen to music and play games.
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