Hi, I am writing an application using KS. The application allows users to monitor the input. With a PCI card, I get delays down to 6-7 ms (measured with a signal generator and a scope). With a USB audio device though, the minimum stable delay I can get is around 20-25 ms. The cause of the problem seems to be the instability of the capture side. I measure the time between capture events and I get delays up to 20ms on USB where it should be 5ms. I am using Microsoft USB audio driver (latest version) and I heard that it can achieve better performance. Did anybody experienced such problems with USB audio? Thanks Pierre Pierre Brisson Adacel Inc. pbrisson@xxxxxxxxxxxxxxxx 450-672-3888 ext 335