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Why do some headphones have frequency responses higher than 20 kHz? - Quora
What is Frequency Response? Does it Affect My Music?
Why does it matter if headphones have a frequency range below 20Hz and above 20kHz? | Headphone Reviews and Discussion - Head-Fi.org
Why do some headphones have frequency responses higher than 20 kHz? - Quora
Is 20Hz to 20 kHz good for a microphone? - Quora
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Do headphones / earphones with 5Hz - 20KHz frequency range really make a hearing difference than a usual 20Hz - 20KHz one? - Quora
What does the Hz-kHz range for speakers and headphones mean? - Quora
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Raw Frequency Response - RTINGS.com
Are headphones under 20Hz and higher than 20khz better sound quality? - Quora
How is a frequency range of 20-20000 Hz achievable in earphones but not in speakers? - Quora
Headphones Frequency Response | ThePhonograph.net
