The issue is that when audio starts coming through my headphones it crackles and pops, but afterwords it doesn't. And then when the audio stops the crackle comes back and then stops after about half a second. I have tried my headphones on different devices without it happening so it is something with my PC or the audio interface it is plugged into. I am using Tin Hifi T2's which are plugged into a Behringer U-Phoria UM2. Thanks for any help!