Quick Lok VP-2622 Volume Pedal for Keyboard/Guitar Stereo volume pedal with 2 input and 2 output 6.3 jacks. The VP/26-22 is suitable for the control of two instruments at the same time - a keyboard instrument or guitar Built with two 6.3 mm (1/4") jack input sockets for connection to the instruments and a further two 6.3 mm (1/4") jack output sockets for connection to the amplifier Heavy metal base for a stable and safe use. Features high-performance custom potentiometer for a long-lasting life. External potentiometer allows for manual sensitivity adjustments.