The Minimoog Voyager Old School differs from the other Voyager models with its traditional aesthetic. It features all analog controls and no display. Each Minimoog Voyager is inspired by the original Minimoog Model D released in 1971 and features 3 wide range voltage controlled oscillators, one noise source, 2 resonant filters, an external audio input, 2 ADSR envelopes and an LFO among other classic traits.