The Rupert Neve Designs 5045 Primary Source Enhancer is an ideal alternative to a traditional noise gate or feedback-fighting system. Using just a few simple controls, you can dial in the perfect amount of background level reduction, without warping your sound. Just insert the 2-channel 5045 Primary Source Enhancer into problem channels of your mixing console and gently dial in the Threshold until the background disappears between the presenter's phrases. The Depth and Time Constant controls then lets you fine tune the volume and response, so you can get totally natural-sounding results, minus the noise and feedback.