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Amazon.com: Audio-Technica ATH-M40x Professional Studio Monitor Headphone, Black, with Cutting Edge Engineering, 90 Degree Swiveling Earcups, Pro-grade Earpads/Headband, Detachable Cables Included : Electronics
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Similarities And Differences Between The Features Of Audio-Technica ATH-M40x And Audio-Technica ATH-M50x Headphones | by Kathy Wheat | Medium
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ATH-M40x Professional Headphones | Sonarworks Reference 4 Software Bundle (Download) - MusicMann Studios
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