A modular docking station receives a variety of electronic modules, such as a tuner, effects processor, signal conditioner, signal distributor, and signal converter, for use with a musical instrument, such as a guitar. A base unit has a flat bottom portion and an angled top portion. A plurality of pushbutton switches are disposed in the angled top portion of the base unit. The electronic module is controlled by the pushbutton switches through the base unit. A plurality of electronic modules, each with a different electrical function, are interchangeable into the receptacle of the base unit. One electronic module is selected for inserting into the base unit to make mechanical and electrical contact. Each electronic module includes a display area and a plurality of indicators for the various electrical functions of the electronic module. The base unit has a connector for connecting to the musical instrument.