ISO Tunes DEFY: Hearing Solution for Sport Shooters


A tactical shooter’s dream, the ISOtunes Sport DEFY enhances your hearing by up to 8x while protecting you from high-impact noises in under 2 milliseconds with a 25 NRR. Through its comfortable design and SafeMax Technology™ that limits volume output to 85dB, DEFY guarantees shooter safety, damage-free listening, and all-day performance. Additionally, DEFY features a unique dual-battery design that provides up to 11 hours of use with the rechargeable lithium-ion battery and up to an additional 22 hours with AAA batteries. The noise-isolating microphone allows for clear communication in loud environments.

DEFY’s innovative design allows it to tip the scales at just 15.5 oz, roughly half a pound lighter than other leading tactical earmuffs. With an IPX4 durability rating and a ventilated headband, DEFY delivers both sweat and water resistance and all-day comfort. Environmental awareness, active gunshot noise reduction, Bluetooth connectivity, and a comfortable fit are just a few of the other baseline features of the ISOtunes Sport DEFY.

The next generation of tactical hearing protection is here. Enjoy all-day safety, focus, and  performance from the new ISOtunes Sport DEFY. For more information on the DEFY or any of ISOtunes’ other products, visit  


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