May 28, 2008 · For distorted tones, use this knob to adjust the amount of distortion or, conversely, allow for more articulation, since more distortion removes articulation. For clean tones, lower values of the volume knob will make your guitar sound more acoustic, and higher values will really bring out the sound of your pickups. Sever pot knob CR dome_I_knurled spiral, spiral as side level indicator, groove shows the position of volume. Extra light weight- made from aluminium, glvanized in chrome finish. Super grip design. Part # 4172 Blue guitar control knob with black lettering 'Tone'. Push-on, for knurled split shaft pots, 6mm. Great option for a guitar with a single tone control like a Tele. When the push-pull switch is down this functions as a standard tone control which cuts highs. When the switch is in the up position it becomes a mid-sucker that scoops mids as you turn the knob down.