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Amazon.com: GUCraftsman 6N Single Crystal Silver Upgrade Earphone Cable 2.5mm/4.4mm Balance Earphone Upgrade Cable for Sony IER-M7 IER-M9 IER-Z1R (L-2.5mm Plug) : Electronics
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Minidisc.com.au - It's a Sony double feature today - we have video reviews of Sony's IER line up of high end earphones. The M7/M9 are stage monitors, optimised for comfortable professional use
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Sony IEM's - IER-M7, IER-M9, and the IER-Z1R - Official IEM Model Discussion - The HEADPHONE Community
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