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Compare Bose QuietComfort 20i vs. Sony MDR-XB510AS

This is a side-by-side comparison of the specs of the QuietComfort 20i vs. the MDR-XB510AS. Differences are highlighted in yellow.
Item QuietComfort 20i MDR-XB510AS
Item image Item image
Active noise cancellation? Yes [x]
Impedence 56Ω [x]
Battery life 16h [x]
Cord length 1.2m [x]
Carrying case? Yes [x]
Magnet Neodymium [x]
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