The high level of craftsmanship in the woodworking is immediately evident and the sheer beauty of bamboo equipment racks is apparent every time you walk into the room. Every Platform shelf is tuned to a specific frequency null. Resonant Pressure Release Aperture (RPRA):The combination of the organic natural sound properties of bamboo and the synergy of a controlled RPRA enhance the depth and realism of your audio system. Isolation Feet:The isolation platforms are on adjustable spike feet for easy levelling and minimal contact. Crafted from solid 3-ply bamboo. Bamboo imparts a warm natural sound, free of such artifacts.