Input Control:
We HIGHLY recommend the Grayhill mod for the gain position. With single stage pres like the Elements series, using a variable pot means much of the gain is in the last 1/4 of the pot turn. Using the Grayhill mod distributes the gain over the whole switch rotation. The variable pot option is available for those on a budget.
Output Control:
The potentiometer works well on the output. The Grayhill is offered for those who like recallability.