The Vari-Watts control the signal level within the power amplifier, allowing it to be driven harder at lower volume levels. For full output power, running the power tubes at maximum levels, turn this control fully clockwise. To reduce output volume, turn this control to the left.
On-board studio quality reverb. Reverb gives you a sense of the space that you are in. A dry guitar signal can sound a little dull. Adding the right about of reverb provides the guitar signal with ambience and brings it to life.
Pulling on each of the EQ control knobs will shift the response of each control as follows: Bass: Deep - This extends the low-end frequency response, resulting in a fuller, heavier sound for lower notes. Mid: Shift - This lowers the frequency range of the mid control to give a tighter sound. Treble: Shift - This broadens the Treble control frequency response, to give a rounder sound to higher notes, especially when used with thin sounding pickups.