Behringer NR300 Ultimate Noise Reduction Effects Pedal � Effectively eliminate unwanted noise and hum without altering your tone � This product has been designed to compete head to head with leading products on the market � Preserves the original attack and envelope while leaving your playing and dynamics intact � Dedicated Threshold and Decay controls plus a Mute mode for awesome flexibility � Additional Send/Return loop for noise suppression of external effect units � Blue status LED for effect on/off and battery check � Runs on 9 V battery or the PSU-SB DC power supply (not included) � First-class electronic On/Off switch for highest signal integrity in bypass mode � High-quality components and exceptionally rugged construction ensure long life � Conceived and designed by Germany