Added a better description for the schematic

invoff/README.md

@@ -6,7 +6,7 @@ Dual Invert and Offset
 
 ## Schematic
 
-Attenuverter with Offset Bias and external Offset CV Input.  
+Attenuverter with Offset Bias and external Offset CV Input. A Input (both Audio or DC) is attenuverted (Knob fully CCW = inverted, Knob in the center = no output, Knob fully CW = non-inverted).  
 
 ![](images/schematic_invoff1.png)