Spectrum's SpecTrac series has three platforms: 1-Basix Track, which is a 3 wire single circuit track. 2-Global Track, which is a 3 wire single/double circuit track system. 3-Nordic Track, which is a two/three/277V track system featuring 2 neutrals. We offer the latest in ballast on lamp technology for the new mini metal halide lamps as well as standards like our SAR-56 stagelight. Adaptors can be specified for any series track head or series platform. Spectrum SpecTrac systems offer a variety of components and mounting options to fit any project.