Inspectee

Headphones

Compare Sennheiser HD 660S vs. Sony MDR-RF840RK

This is a side-by-side comparison of the specs of the HD 660S vs. the MDR-RF840RK. Differences are highlighted in yellow.
Item HD 660S MDR-RF840RK
Item image Item image
Impedence 150Ω [x] 28Ω [x]
Magnet Ferrite [x]
Buy now