When designing my place (inside a steel building), I built this wall about 2 feet thick. Then framed out these cubbies with a sliding shelf for each piece of equipment. Finished the front with brushed aluminum I made up from flat stock.
I Just thought you might like to see a different type of setup.
There is nothing quite a classic as a wall of McIntosh gear. Very clean. No visible wires and no rack to vacuum around.