One set of three Acoustic Revive RCI-3 audio Cable Insulators in a very good condition. The purpose of the RCI-3 Cable Insulators is not to isolate speaker cables from the floor, but to reduce the transmission of loudspeaker vibration to the cables, which Acoustic Revive says degrades performance. Most conventional cable insulators (or stabilizers) are made from a single material. So even if the cable is lifted from the floor, they will generate their own resonance which will inevitably induce coloration. At Acoustic Revive they have tested many materials, and as a result of these tests we decided to adopt a combination of top quality maple and ebony, which makes the sound natural and free from coloration. Inside the insulators is a blend of natural ores which absorb electromagnetic waves and radiated noise from the cable. Because of its combination of resonance control and noise absorption abilities, the RCI-3 will dramatically improve sound in a manner never before achieved. Noise is dramatically reduced and sound stage and imaging are more focused and three dimensional. The tone will become smoother as well. The original boxes are included. Retail price is 600 euro for the set of three. Check our other listings for more interesting items. Free shipping worldwide!