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Review title: Poor Bass
Product review: After buying both Sennheiser PX100 & PX200, I decided to return the PX200. The bass response was non-existent - even after over 40 hours straight of burn-in. The sound on the PX100 is astonishing - unfortunately those next to me on planes and trains will have the opportunity to enjoy the music with me thanks to the sound leakage.
