The FBV Express MKII is a versatile foot controller designed for use with Line 6 Spider Jam amplifiers. It allows guitarists to easily control various functions of the amp, including channel switching and onboard effects. The pedal features rugged construction, ensuring it can withstand the rigors of live performances. It connects with the amp through an RJ-45 cable, making setup simple and fast. The pedal's layout includes lights that show the active status of functions, and it allows users to access up to four channels in each user bank for maximum flexibility while playing.