I am using all available space in this unit with two heavy poweramps, a crossover and several wireless monitor units. I have it out 4 nights a week and so far so good. Its solid and sturdy and weel constructed. Plenty of space at the back end behind my amps which is handy. The only minor complaint is that the wheels have a mind of their own, even with a full load in, the unit still moves so freely the you couldn't let go of it for a second unless the ground is very even. A very trivial negative though to be fair, its an excellent unit