These aviation headsets combine the latest audio technology with superb comfort. The NoiseGard™ active noise compensation reduces cockpit noise by approx. 15 dB ?C so you don??t need to have the radio as loud. The HMEC 46 headsets incorporate peak level protection which safeguards your ears from volume peaks in the headphones above 110 dB. The new headsets are available with all common plug configurations and as battery or aircraft powered variants