The Keeler Pull is intended to enhance the natural characteristics of your tone, adding sonic girth and pulling the maximum richness and harmonic complexity out of pickups and tubes. It's also perfect for stacking, serving as a complimentary accompaniment to your other dirt pedals. Volume, Gain, and Tone knobs are supplied to dial the Keeler Pull in, and it responds beautifully to subtle tweaks to your guitar's volume and tone knobs, if that's how you roll. Like all Keeler Designs pedals, the Keeler Pull is handmade in the USA by Rob Keeler himself, and maintains the utmost truth in it's bypass. Oh, and it's blue and sparkly!