The Ernie Ball Stereo Volume/Pan pedal has been the industry standard forever. With its tough extruded aluminun chassis and bulletproof housing, I can see why this is the choice of so many pros. Operation is a simple as rocking forward for an increase in volume, and rocking back for a decrease in volume. The travel is smooth and responsive with no noise, hum, pops, or crackles. The 6165 Model allows for stereo operation. For panning duties a small foot lever along the side of the pedal can be activated to pan between the A and B outputs making it an interesting device for manipulating fx and/or different amps. As with all Ernie Ball volume pedals, you’ll be hard pressed to find to find something more dependable and well built.