These wood blocks with a shiny cup inside are supposed to act as resonators, reflecting and deflecting the sound and making it sound, well, great. Barely larger than the palm of your hand, the platinum one will clip you for $2380. " At many shows we visited over the last couple of years, we have seen them - wooden blocks approximately 2 x 2 inches with a shiny hemispheric cup mounted on 'em. Think miniature Tibetan or Japanese singing bowl. Looking closer, the wooden blocks sport an Acoustic System and Made in France branding. They are supposed to enhance the acoustic qualities of the rooms they're placed in. Almost all rooms we spotted them in sounded really good. Coincidence?" www.6moons.com/audioreviews/acousticsystem/resonators.html