“Will these play without a battery/with a spent battery? Some models will play without power, losing only the noise reduction function.”

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• Yes, the ATH-ANC20 Headphones will play audio without a battery in place or with a spent battery in place. Only the noise-cancellation function is lost.

  Answered by AudioTechnica 8 years ago

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• It will play without noise reduction, if you don't use batteries.

  Answered by Nikki 8 years ago

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• No you need a battery. Obviously

  Answered by WhyBRO 8 years ago

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