For 14 years, the famous BOSS FV-300 served as an industry-standard volume pedal. The tradition continued with the FV-50 series, but today the bar has been raised with FV-500H (mono, high-impedance, inst. level) pedals. These tank-tough diecast pedals are designed to meet the needs of the most demanding customers. The pedals offer a new stylish design, a road-tough build, and a comfortable, smooth action. This model also provides an Expression output for use with expression-compatible amps, effects, and even synthesizers. Convenient tuner-output jack Adjustable pedal feel (torque) Control - MINIMUM VOLUME knob Connectors - INPUT jack, OUTPUT jack, EXP (Expression) jack, TUNER OUT jack W x D x H - 4 3/8 x 11 7/16 x 2 7/8 (110 x 289 x 72 mm)