We have a speaker system that is using the in-box usbaudio driver where the satelites have Treble & Bass controls. The satelite responds correctly if the tone is changed from the Vista control panel, but not from the satelite. The thought is that our FW is not enumerating the device correctly to Vista; does that seem reasonable or is there some other possibility? Also, does anyone know if there is a specific portion of the enumeration that lets Vista know a device wishes to control Treble & Bass? Thanks in advance, Ernie Ernest L. Burghardt Software Engineer Logitech ****************** 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.com/