When I plug my headphones directly into the front audio port on my case, it's fine. When I use the audio port built into the keyboard with the front audio port on the case, I get this rather annoying buzzing sound. If I'm listening to music or something, it's in the background and I don't even notice it. However while playing games and listening for footsteps and whatnot, the buzzing sound become a nuisance. The keyboard is probably 3-4 years old, but I've always had this problem with it.