Based on what is written in the article - it mentions Satin Walnut finish, and looking at the finish options of the 5HP webpage, it appears to be real wood.

Here is a link to the attributes https://www.axiomaudio.com/optionswizard/wizard/index/id/930/attribute183/145/attribute184/3/

Click Read Wood from the list, select Walnut, and then select Natural from the Stain choices, then Satin from the Gloss drop down

Note that it does add cost to the speaker