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Amazon.com: HIFIMAN HE400i Over Ear Open Back Magnetic Planar Reference Studio Headphone with 3.5mm Plug-in Connector-Extended Manufacturer's Warranty : Electronics
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Amazon.com: HIFIMAN HE-400I Over Ear Full-Size Planar Magnetic Headphones Adjustable Headphone with Comfortable Earpads Open-Back Design Easy Cable Swapping : Everything Else
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