These are almost as silent as it gets for your recordings, almost no bleed at all. As for mixing they are too shrill but they are after all for drummers and designed to break through the mass of sound you get around you so it's all good. You can get a slight headache after hours upon hours of recording since they are tight fit on your head but you don't have to be an idiot like me, you can actually take some breaks once in a while.