This Markbass footswtich was designed specifically to work with 5 different Markbass bass amp heads, specifically the TA501, TA503, LMK, R500, and the Classic 300.
Its functions vary per bass head. For the TA501 and TA503 one button controls the mute function so you can tune silently, while the other activates the EQ bypass. For the LMK the footswitch allows you to change between its two channels, play them together, or mute them both. In the case of the R500 and Classic 350 the switch is strictly to activate the mute function. Versatile and small, the Markbass footswitch comes with enough cord for you to hear your bass without standing right on top of it.
