This type of product does not exist on the market. All cables from existing single earphone or monitor loudspeaker in museums and exhibition halls are visible and some times disturbing in front of the visitors. The cable is not protected and under certain circumstances it could be possible that kids can injure them self or fall down. The dmb roller offers a safe and properly solution for museums, can be combined esthetically with the architecture, the cable is always in the compartment, no disturbing cables in front of the visitors, the earphone will be used if needed and later released. The dmb roller system can be used with products from different manufacturers (loudspeaker or earphone) with connection cables with diameters of 3mm to 18mm.