They seems to be ok. I dont have any problems, and my latency is between 5-10ms. I have heard lot of horror stories about their drivers before I bought it, but then I decide to go for it, and even EMU support is not as proper as lets say M-Audio one and they dont have new drivers every 3 months, it is worth getting it, because the sound quality for that price is top notch and I dont think you can get something better in that price range....