there is such a thing as stain conditioner made to help difficult woods such as maple. Essentially it is the same substance as the carrier used in stain, but clear. It keeps the end grain pores from absorbing the stain too readily. Otherwise Photon46 is correct, spray dyes are what is used in production environments.
Michigan Maple Block Query
I am considering a Michigan Maple Block AJA02015 audio platform/cutting board, 18" x 18" x 3 1/2", to replace a shelf in my audio rack for supporting a DAC. The thickness also ideally raises the height of the DAC in the rack. My concern is that it is unsealed maple. Preferably, I would like it black or, minimally, sealed in some way, because the shade of the maple is something I can live with. I am looking for suggestions regarding this. Should I be concerned if left unsealed for this application or not? Thanks in advance.