This has been discussed at length several times, a check of the archives for "veneer," "wood care," "lemon oil," etc. will bring up numerous relevant threads. I firmly believe that any modern wood finish sufficient to impart a protective finish, be it matte or gloss, is not going to allow the migration of any oil or moisturizer through it's barrier film. An older speaker like the Ohm might have something like a semi-permiable tung oil or danish oil finish that can be renourished. Modern catalyzed finishes are a different matter. Lack of humdity is the enemy of wood. Maintaining proper ambient humidity is much more effective than any application of moisturizer to preserve wood veneeer.
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