About three years ago, I did a review of the TC Electronics Sentry. It’s an example of a noise gate for a pedal board. Since that time, I have happily been binging on pedals and related gear yet I still hear and get questions about dealing with noise from the amplifier when the instrument is not being played. Sometimes it appears to be electrical noise but most often it’s pickup noise that creates some really annoying hiss. Adding a noise gate can be a simple method to deal with this.