Applies to: X-Station
In stereo mode, when 'Pan' is set to 0, the signal is set to mono (an equal amount of both signals is sent to each stereo channel via USB or the outputs). When set to 127, Input 1 is sent to the left channel, and Input 2 to the right.
To accurately record the stereo input without changing the stereo image, you should set the pan control to 127. Setting the 'Pan' to any value lower than 127 will reduce the width of the stereo image, so the control can be used to narrow a stereo signal if it is too wide.