I have a small rack rig consisting of tube preamp, graphic EQ and power amp. Previously I've just have them stacked atop each other at the bottom of my desk, which I found kinda unideal. I decided to purchase this rack box to have them organized a little better, and keep them atop my cab. Unfortunatelly the box slides a little bit on the cab's surface so I'm not fully secure about keeping the rack there, so I have to figure other place for it. I wish it had some sort of handles for better handling as heavy rack units and the box itself aren't so easy to move around, but then again, it's ment to be kept stationary in a studio or reharsal flat, not being hauled around on a tour. All in all, it does what it's supposed to, it's not the best or sturdiest rack box, but it's pretty good for the money, and if you don't need to move it around much, it's pretty much enough.