Some classic mini units from Programmi Sistemi Luce (PSL)! These are the Baby Star Sound units that use a very similar chassis like the Sting units from PSL. Difference ids these are a moonflower and not a spot lamp. These fixtures uses a 12 volt, 50 watt HLX 64610 capsule lamp to produce a bunch of beams of light that rotate to the beat of the music. Sound trigger is from the michrophone on the unit. These units were avaialble in the sound version (sound reactive), static version (no movement) and standard units where they just rotate at a constant speed. There is a direct RCA style plug to attach optional effects to the end of the chassis. These are color wheels and also an optional scan mirror. The RCA connectors provide the power to the attachments. The units come in white (clear) color but each unit also comes with 4 gels pre-cut from the factory for different colors. Any gel can be used so the colors are endless for these units. Great little units made in Italy.