The Tapestry Audio Bloomery Passive volume pedal is a compact, sturdy pedal with an all-new stringless design. The passive version of the Bloomery uses a slide potentiometer and a direct shaft drive, negating the need for strings as used in other volume pedals and providing an action that's as smooth as silk. With an internal switch, the Bloomery Passive volume pedal's tuner output can actually be used as an expression output to control other pedals on your board, making this passive tool one of the most versatile volume pedals on the market.