[Music] [Music] [Music] the first file tests your headphones bass extension the following frequencies ranges from 200 Hertz to 10 Hertz good headphones will go as low as 20 Hertz the lowest limit of our hearing let's see how far can you go [Music] [Laughter] the second file tests your headphones treble extension good headphones will reproduce frequencies up to 20,000 Hertz the upper limit of human hearing range [Music] poorly built headphones may start to rattle whenever loud for a deep bass content is played the next file scans bass frequencies and will literally shake your drivers when turning the level up adjust the volume in your headphones so that the test is made at a high level the sweeping tone should remain pure and clear at all frequencies without any buzz [Music] you [Music] better headphones have tighter tolerances in the variation of their drivers frequency responses to reproduce a faithful stereo image the left and the right drivers must respond equally to every frequency in the audible spectrum the next sweeping tone should keep a perfect central position across all frequencies playing right in the middle of your head without any deviation [Music] [Music] [Music] binaural recordings our recordings made by placing microphones directly in one's ear by playing back the recording through headphones one ensures that each of the listeners ears get the exact same signals as originally captured [Music] headphones that are properly wired will route the left channel to the left ear piece and the right channel to the right more important relative polarity between drivers must be preserved when presented with the same input signal both drivers should move in the same direction not opposite of each other let's test it [Music] [Music] [Music] [Music] [Applause] [Music] [Music] [Music] [Music] we amen [Music] finally we're Oh [Music] [Music] [Music] [Applause] let's do a hearing test note the frequency when you start hearing the sound you [Music] [Music] so what was your score see random weirdos sharing their scores below why not share yours too it's free after all like the video if you liked it and subscribe for more it's hi hacker [Music] you