NoiseBuster® Active Noise Reduction ("ANR") Safety Earmuffs are your best defense against harmful noises encountered in industry today. The NoiseBuster is specifically designed to protect you against the low-frequency noise generated by equipment such as motors, engines, generators, blowers, vacuums, fans, pumps, etc. - noise that conventional passive earmuffs or earplugs alone can't handle. NoiseBuster is the only industrial hearing protector on the market today that combines passive and active attenuation for a new level of noise reduction performance.

• combined passive and active noise reduction
• electronic reduction of low-frequency rumbling noise
• audio input for use with portable audio devices
• over-the-head model PA4000

combined passive and active noise reductionPro Tech Technologies, Inc.