Check the listing for details. BOSS FV-500L Stereo, Low Impedance Volume/Expression Pedal. Condition: New. Listed at 147.99 USD. Boss FV-500L Volume/Expression Guitar Pedal Description 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 BOSSs FV-500L (stereo, low-impedance) pedal. This tank-tough diecast pedal is designed to meet the needs of the most demanding customers. The pedal offers 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. Features FV-500L: stereo, low-impedanceHeavy-duty aluminum die casting bodyUltra-smooth pedal movement for the utmost in comfort and controlPedal rubber is for comfortable play and non-slip actionExpression pedal functionConvenient tuner-output jackAdjustable pedal feel (torque) Attributes Effect Type (X): Volume/ExpressionColor (X): SilverOutput (X): MonoInput (X): Mono