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ESP-9

Koss - ESP-9

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Based on 1 year's data from Mar 17, 2026 How it works

Reddit IconDJ_Reticuli 1.0
r/headphonesSubstantially more accurate over ear closed headphone than S4R?
4 months ago

I guess that's not a great comparison, then. Better than the DT1350 and HD580, or even just as good as those, but I don't expect ER4S or Stax 009 sound out of a closed circumaural headphone.

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