Audio-Technica ATH-M50x review: The best-sounding headphones under $200 get (slightly) better - CNET
Amazon.com: Audio-Technica ATH-M50X Professional Studio Monitor Headphones, Black, Professional Grade, Critically Acclaimed, with Detachable Cable : Audio-Technica: Musical Instruments
Audio-Technica ATH-M20X Professional Monitor Headphones 4961310125400 | eBay
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Audio-Technica ATH-M50x Teardown - iFixit
Headphones important for field recording? ATH - M50X wins out at $150 - YouTube