It's very easy to use: there are only 3 knobs on it, threshold (determines the sound level the signal needs to fall below before the NS-2 silences it), decay (determinies the time before the effect kicks in - the further clockwise you turn it, the more natural it sounds, but it will be less efficient at cutting noise. You can pretty much leave this at minimum, unless it sounds un-natural to your ears) and mode. There are two modes: reduction, which means when the pedal is off, nothing is happening, and when the pedal is on, it cuts noise; and mute, which cuts noise when the pedal is off, and totally mutes your sound (e.g. for tuning) when the pedal is on. There's also a handy led to tell you when it is actually cutting noise. It has a send-return circuit for plugging your other pedals into. The NS-2 completely rids it of any noise that I don't want. When you start playing a note, it's instantaneously there. There's no annoying fade in that leaves the attack sounding like something fluffy and uncertain. When I don't play (even with the distortion on and turned up all the way) it's virtually silent. It has a mute option that allows you to simply cut all sound from the guitar instantly. So if you begin to get feedback, step on it and it will be gone. If you are deciding what noise removing thing to buy, this is it!
