DetailsINDUSTRIAL-STRENGTH POWER PEDALFor 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 BOSS’s FV-500H (mono, high-impedance, inst. level) and FV-500L (stereo, low-impedance) ped..