16mm Potentiometers as used in our guitar pedals. With a variety of ohm resistance to choose from, you also have the option to choose between 'B' (Linear Taper) or 'A' (Audio, or Logarithmic Taper.) A linear taper potentiometer increases in a linear manner as you would expect (i.e., 1, 2, 3, 4) as you rotate the potentiometer to the right. An audio taper potentiometer increases slowly at first and then increases more quickly the further you turn it.