Laminated bamboo, like say cutting board products are starting to show up in the U.S. market from China and bamboo is about 18% harder than maple in a lamination. I have no idea where that puts the resonant frequency yet it may have possibilities. I have used a pair of 18x24x2.5 panels under my Atma-Sphere amps on the floor next to my speakers with BDR cones under them and so far so good. They have no sonic detriment compared to maple and are far more exotic in finish. The finish resembles old growth teak due to the bamboo sugars being caramelized during the pressurizing and heating process of lamination. Very nice indeed.
Happy Listening!
Happy Listening!