How to choose the settings in Master-10 :
    With the Master-10, the user has a choice of 70 steps ( Linear characteristic ) and 99 steps ( Exponent characteristic) of volume control, and you can also choose whether to have volume memory.
1. Choose 70/99 steps volume control:
Step A: Push out the "Debug" switch.
Step B: The display shows as pictures below.
Step C: Push the volume button, choose between 70 or 99 on right.
Step D: Push in the "Debug" switch.
           70 step volume control              99 step volume control
             
2. Choose volume memory:
Step A: Push out the "Debug" switch.
Step B: Push the selector button; the display shows as pictures below.
Step C: Push the volume button, choose display "ON" or "OF" on left.
Step D: Push in the "Debug" switch.
          Volume memory active.                 Volume memory off.