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Compare Sony DR-140DP vs. Sony MDR-RF840RK

This is a side-by-side comparison of the specs of the DR-140DP vs. the MDR-RF840RK. Differences are highlighted in yellow.
Item DR-140DP MDR-RF840RK
Item image Item image
Impedence 24Ω [x] 28Ω [x]
Cord length 3m [x]
Magnet Ferrite [x] Ferrite [x]
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