Well made hardwood with veneer.  Back is thin wood, not cardboard.  Be careful with glass door hinge pins; they permanently lock in place (I had the doors reversed, oops, and solved by also reversing the metal plates for the magnetic catch).

Center section is tall enough for AV receiver on bottom and Tivo with XBox on top shelf.  Runs hot with glass doors closed, so I will be buying an aftermarket fan to cut into the back.