More than 25 million Americans live with noise-induced hearing loss (NIHL), one of the most common and preventable workplace injuries. Many cases result from long-term exposure to excessive noise at work or during recreation. We do not want to add to that number, so we have taken intentional steps to help ensure we do not.

All ISOtunes® products feature our signature SafeMax™ Technology, which limits maximum volume output to support responsible hearing conservation.

Most ISOtunes products sold in North America are capped at 85 dB for industrial use. This aligns with OSHA’s 85 dBA Action Level and NIOSH’s Recommended Exposure Limit for an 8-hour workday, offering a conservative approach to long-term protection.

Some ISOtunes models feature a SafeMax™ 90 dB limit. OSHA’s legally permitted exposure limit is 90 dBA averaged over eight hours, and standards are based on time-weighted averages, not constant maximum output. A 90 dB cap represents a maximum ceiling, not continuous exposure. In real-world use, SafeMax™ technology prevents the dangerous volume spikes common in consumer headphones, many of which exceed 95 to 100 dB without limitation.

ISOtunes also offers Listen Only models designed for environments with stricter industrial audio requirements. These Bluetooth-enabled products allow users to stream audio but do not support phone calls, and they limit maximum output to 82 dB.

Separately, ISOtunes offers EN352-certified models that limit output to 82 dB to comply with European safety regulations. EN352 versions maintain the same core features and performance as their standard counterparts, with volume limiting aligned to certification requirements. EN352-certified models are available by request. Please contact us through our contact form to learn more about availability.

When combined with proper passive noise attenuation, ISOtunes products help reduce overall daily noise exposure while maintaining clear communication and situational awareness.

At ISOtunes®, hearing protection is about managing exposure responsibly over time so you can protect your hearing today and preserve it for the decades ahead.

All products limit volume output to 85 dB or 90 dB depending on model. Please refer to individual product specifications for details.