"(...)Yesterday I had the pleasure of experiencing a musical feast.

I was at a private presentation by the owner of the Gemstone company, a music enthusiast, perfectionist, designer and creator of concrete stereo speakers.

I have never heard such a pure, velvety and at the same time aggressive and spacious sound. The source of the sound is difficult to locate, coming from the walls in front of me. The sound triggers extreme emotions and the feeling of being in a concert hall or philharmonic hall, allowing you to move to another world. Highest quality speakers for music connoisseurs and audiophiles.

I would highly recommend"