The Boss FV-50L Foot Volume Controller is the perfect way to get control over your sound. Whether you're playing guitar, keyboards, or any other instrument, this volume pedal gives you the power to dial in just the right sound level. The minimum volume knob ensures that you never have to worry about being too loud or too quiet, and the tuner out jack makes it easy to keep your instrument in tune on stage. The low-impedance design enables direct control of stereo keyboards and effects units. Minimum Volume knob lets users set minimum volume as desired. Convenient Tuner Out jack enables speedy tuning on stage. Low-impedance FV-50L enables direct control of stereo keyboards and stereo effects units.