Electro-Harmonix Silencer noise gate is a compact analogue noise gate pedal that removes unwanted hum from a guitar or bass signal chain. Has the added facility of a built in effects loops which allows you to isolate an entire group of noisy pedals if required. Very good condition, has velcro on the bottom from living on a pedal board which can be removed without causing any damage if required. I lost the box so it comes without, but this is reflected in the lower than average price.