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Compare Sennheiser HD 650 Apogee Groove vs. Sennheiser HD 820

This is a side-by-side comparison of the specs of the HD 650 Apogee Groove vs. the HD 820. Differences are highlighted in yellow.
Item HD 650 Apogee Groove HD 820
Item image Item image
Impedence 300Ω [x] 300Ω [x]
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