An infrared parametric oscillator using proustite and pumped at 1.065 &mgr;m has been operated with peak output powers in the kilowatt range. No significant deterioration of output power was observed after several hours of running at 2 pps. Tuning from 1.82 to 2.56 &mgr;m was obtained, limited only by the reflectivity limits of the mirrors used. With careful design, DRO proustite oscillators covering the entire range 1.2–9.5 &mgr;m now appear feasible.