i have thought about that. i am actually making the top recessed section modular, so if i ever get a large console or something again, i can remove the racks and put a flat shelf in. i am sure i can do the same with a back shelf. i was planning on putting my monitors (speakers) on the top of the racks. as it is right now, my DM24 (used as a control surface) will go in the recessed area in the center.