Boss NS-2 Noise Suppressor Pedal Authorized Dealer!! The Boss NS-2 gives you a guitar effect pedal that is both powerful and efficient. This guitar pedal was designed to create tones with noise suppression effects. The Boss NS-2 frees up your creativity for when you need to reduce the noise from your guitar such as buzz from the input signal or excessive noise from high-gain channels. The Boss NS-2 noise suppressor gets rid of that annoyance without compromising the sound that you expect to hear from your guitar. The device uses a unique circuit that is designed to detect noise in order to deliver the guitar's natural sound. It features threshold and decay knobs that allow you to easily customize the suppression amount based on your desires and needs. This Boss NS-2 guitar effect pedal is powered by either a 9V battery or an AC adapter.