Picked up this noise gate as I'm getting way to much buzzing and humming with 9 pedals on the board so obviously I needed to add a 10th. Power supply is maxed out but my Snark tuner pedal has a power output to jump to another pedal when it's off. Anyways I noticed this noise gate has an effects loop feature with return and send. I'm not sure exactly how it works or what it's for. Anyone else use this pedal? I'll post an update after I hook it up and play.