Abstract: A mechanical oscillator of the type which includes a mechanical resonator and a resonator driver connected in a regenerative signal loop in which the driver receives the resonant frequency signal of the resonator and provides, in response thereto, a constant magnitude drive signal of equal frequency and supporting phase to the resonator to maintain a minimum amplitude for the resonant frequency signal, is provided with dual resonator drivers actively connected in parallel in the regenerative loop, each providing through a load sharing network a proportionate amount of the total drive signal magnitude in complement with that provided by the other, and each providing the full drive signal magnitude in the presence of a failure of the other.