Maple. Unfortunately engineered rosewood on the kit guitars really isn't very good at all. There are decent engineered wood board materials around, but they obviously too costly to use in the kits.

I can't see the option box on the DMS-1 kit for selecting maple or EW, so the EW may no longer be available (assuming the kit pic is still valid) or it may be an oversight on that web page. Worth checking via email with Pitbull before any ordering