When I plug my USB headset in, it does not appear as hardware device within the sound preferences. However, it is present in lsusb:
Bus 003 Device 002: ID 046d:0a14 Logitech, Inc.
It works fine in Windows and so that would suggest that it isn't a problem with the headset itself.
The native audio device in the laptop is listed as:
00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 05)
but I'm not sure whether this has any bearing on this situation.
Any suggestions would be great.