Unlike conventional noise gates, the IBANEZ NB 10 Noise Buster is capable of cutting out noise not only while there is no signal flow, but during actual playing as well, thus providing far more effective noise reduction. A FREQUENCY control lets the musician eliminate noise components without impairing the envelope or sustain of the original sound. With the NB10, players are liberated from the adverse influence of stage lighting or single coil pick-ups on their music, and high gain distortion effects can be used without having to worry about noise.

from: brochure Ibanez Power Series Compact Effects, Nov. 1987