> 24/96 is 576 KB/s. Full duplex is twice that, a bit under 1.2 MB/s. USB > 1.1 can handle that if the software behind it is efficient enough. you are right but since 10 % is reseved by the OS you will see a error message <not enough bandwith available> under all Win Versions if usbaudio.sys enumerates such a device. Thomas ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/