An optimally coupled stringed musical instrument bridge having an individual bridge assembly supporting and retaining each string. Each assembly comprises an action (height) and intonation (length) adjustable string support assembly and string retention assembly integrally incorporated into the instrument body. The bridge minimizes acoustic energy lost to friction, thereby increasing sustain, minimizes fundamental or harmonic interaction between strings, and maximizes acoustic energy transmitted to the instrument body, thereby allowing the natural instrument resonances to emanate. The bridge and its attributes are especially suited for use with bass guitars.