This is the All Wood Hydraulic Height Adjustable 5.0 Octave Concert Marimba with Oak frame stained dark, brass tune-able resonators, and Honduras Rosewood bars.
Here is what our customer says:
The marimba arrived a few days ago! It sounds great and we have really enjoyed it. I adjusted one of the resonators slightly (low D) and everything was very easy to adjust. Very impressed with the engineering of it all.