Zoom H6 Operation Manual page 212

Converting MS format input signals to ordinary stereo
Signals from an MS format stereo mic input through Inputs 1/2 or Inputs 3/4 can be converted to an ordinary stereo signal.
1.
Press
2.
Use to select
"INPUT&OUTPUT" and
press
3.
Use to select "MS
Matrix" and press
4.
Use to select the
tracks to convert and press
04
5.
Use to select an
item, and press
Turn "On/Off"
Use to select "On"
and press
NOTE
When set to On, the selected tracks will be converted into
stereo tracks.