INVISONO® is available in various designs. Starting with the passive loudspeaker system, which is easily connected to the existing system, up to the Deluxe version with Dolby Surround 5.1/7.1. The resulting acoustic fields shine with precise sound of the highest quality. With this special technology the well-known limitless design possibility of all FRECOLORI® fine plasters are available as a finishing treatment, but use without the plaster is also possible. Let your walls chime with INVISONO®.