Solved: the bits per sample value was mangled. Set to 2 as in 2 bits worth rather than 2 bytes . From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Jerry Evans Sent: 23 February 2014 16:51 To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] 'Advanced' tab in Sound properties? Another oddity. At some point during various firmware refreshes for our multi-channel USB capture device the Sound applet Advanced tab has disappeared. The device properties (sample rates etc) are all displayed correctly in KsStudio. What am I missing? Many thanks. Jerry.