Electro-Harmonix Nano Small Stone Phase Shifter Guitar Effects Pedal The Electro-Harmonix Nano Small Stone Phase Shifter is everything you love about the original Small Stone in a smaller, die-cast package! It's an effects pedal that delivers full-bodied, three dimensional phasing to add a special swirl to every musical style. Blues boys and babes dig its rapidly rotating speaker effect while Country players use it to add seasoning to their chicken' pickin'. Metal-heads and Industrialists dig the Stone's jet plane woosh. No matter what your musical pleasure, the Nano Small Stone Phase Shifter is guaranteed to increase it! The rate control adjusts the speed of the phasing sweep (clockwise rotation for a faster rate). Snapping the color switch up carves into the frequency spectrum, hollowing out the sound. Fundamentals and harmonics glide in and out for an extremely pronounced shifting effect. Return the color switch to the down position and the fullness returns. In the non-color position, with the sweep speed at minimum, the effect is not as strong and if the slowest sweep is desired the color switch should be in the up position.