Hello,

I was reading the USB Audio Specs from http://www.usb.org/developers/devclass_docs The document talks about Effect Unit Descriptors and few other descriptors.There is no mention of such descriptors in the 'lsusb -v' output for the USB X-Fi 5.1 Does this mean thet the X-Fi,Crystalizer features of the USB X-Fi are implemented purely in software? Here is a link to the lsusb output http://mndar.phpnet.us/usbxfi/files/creative.txt

The document "Audio20 final.pdf" also mentions that bDeviceClass, bDeviceSubClass and bDeviceProtocol should have values 0xEF, 0x02, and 0x01 respectively but in the 'lsusb -v' output all three values are 0. Any idea why it is so?

Regards Mandar Joshi