Listen in peace to your music! The Mutant NC102 noise canceling headphones offer an unparalleled value. The 18dB reduction at 300Hz is on par with high-end "professional" models and blows the other models in the "consumer" range out of the water! Why pay more, for less?. 18dB active noise reduction at 300Hz. On par with professional brands, beats the value of consumer brands!. With superior sound quality, your music never sounded so good!. 18dB active noise reduction at 300Hz.