Mark, you've got the V2 with the MS-mod switch on the front right? If you engage that switch, the v2 will sum the left (mid) and right (side) channels and output the MS signal. Pumping the left gain will increase the 'mid' information across both (output)channels. Pumping the right gain will increase the 'side (or width)' information (i.e. the fig-8 mic). However, if you run the v2 as normal, then you end up with your regular discrete left and right channels....that way you can use your editing software to adjust the 'mid/width' after the fact. Most people recommend the latter as it can be difficult to monitor the recording accurately in a live setting.