Our racks are highly customizable to fit your needs. Shipped flat packed and are with as many shelves you need (2-4) to support and display your audio system.Tri-Art Audio equipment racks including each shelf is made of solid 3-ply bamboo. The shelves are sonically tuned with a Resonant Pressure Release Aperture (RPRA). Utilizing the sonic properties of copper, brass, and bronze, each shelf is tuned to a specific frequency null. Each equipment rack is fine-tuned by designer Steve Ginsberg before it goes to packaging and ultimately to your home. 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.