The Slimline Noise Guard Headset provides 12dB of noise attenuation, protecting the patient from the loud sound of the gradient amplifiers, and is compatible with most other manufacturers’ sound systems. The slim profile of this headset fits into most head coils. The Slimline Noise Guard Headset is not rated to sufficiently reduce noise, and therefore must be used in conjunction with earplugs with a minimum NRR rating of 29 in order to be ANSI compliant.