Radio Shack retail stores offer the Sony MDR-NC40 Noise-Canceling Headphones for $19.97. That’s $19 under our summer mention and the lowest price we could find by $39. (It’s even less than what some merchants are charging for a used pair, which is around $50.) Sales tax is added where applicable. Features include up to 80% ambient noise reduction, 14Hz to 22kHz frequency response, and more.

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