Harmonix RF-999MT MkII, Ultimate spike base (4-pack).
Special base for spike equipped speaker/electronics. Fabulous improvements in Low (deeper), Mid (richer) and High (sweeter)frequencies. Hybrid made of metals, cherrywood and finish in Jacarandawood.
・ Hybrid layer of wood and metal, Jacaranda wood finish
・ (77mm dia.(bottom) x 22mm(H)) Set of 4
・ Weight Limit: several hundreds kilograms