PXC 250 is a compact noise cancelling headphone that is based on active noise cancellation (noise guard technology). This means that the earphones have a microphone that absorbs the unwanted ambient sounds, so that the background noise is being reduced. The active noise reducing is especially useful when traveling in airplanes and trains.
It also appeared that this technology was also effective on reducing annoying noise from the computer. But the active noise reducing also has some downsides, when it is turned on, an irritating sizzle is heard. This is creating a defect to the bass and the sound is being a little affected by this.





























