This pedal is ideal for a player who uses a lot of processing, or for single coil players. It resides nicely at the back end of your signal path, quelling the noise of a row of pedals or a noisy pickup. The Mooer Noise Killer provides two working modes: Hard and Soft. Hard: Provides a sudden and dramatic noise reduction. Soft: Provides a gradual of noise reduction. This pedal features a full metal shell, silent switching, true bypass and an included DC 9V Adapter power supply.