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Compare Sennheiser HD 4.50R vs. Sony MDR-IF140K

This is a side-by-side comparison of the specs of the HD 4.50R vs. the MDR-IF140K. Differences are highlighted in yellow.
Item HD 4.50R MDR-IF140K
Item image Item image
Impedence 18Ω [x] 60Ω [x]
Magnet Ferrite [x]
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