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HIFIMAN HE-R9 Review: These Dynamic Closed-Back Headphones Provide Sensational Sound On The Move! - HIFI Trends
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Archimago's Musings: REVIEW / MEASUREMENTS: (Mass)Drop + HiFiMan HE-4XX Planar Magnetic Headphones (with Brainwavz XL Round Hybrid earpads). Maintenance if the earcup detaches.
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