Electro-Harmonix Silencer Noise Gate/Effect Loop

From the listing

Seller's description

Threshold adjusts how much level is required to open the noise gate and allow a signal to pass thru. Reduction regulated the degree to which the gated signal is reduced and is variable between -70dB and +4dB. Release controls how long the gate remains open after the signal drops below the Threshold. Release time is variable between 8ms and 4 seconds. I/O includes ¼ inch Input, Output, Send and Return jacks. The footswitch selects whether The Silencer is engaged or in bypass mode; buffered bypass allows the effects loop to remain in your signal path when the gate is bypassed. A built-in AC jack accepts a standard power supply like the EHX 9.6DC unit (optional) and the pedal comes with a 9V battery. Conquer noise with The Silencer! Quick Specs - Three controls for precise fine-tuning - Use it as an inline noise gate or to gate an entire effects loop - Delivers up to -70dB of noise reduction - Features 8ms to 4 seconds of release time - Buffered bypass - Compact design, rugged chassis - Equipped with a 9V battery and accepts a standard EHX 9.6DC/200 AC Adaptor (optional)