Combination flight cases not only give you access to the front of the case, but they also make it easy to reach the top. You can place a 19-inch DJ Mixer on top, with the rest of your 19-inch devices, such as amplifiers, crossovers and equalizers, below. There is a small opening at the rear as well so you won't have any trouble reaching your Cables. In general, combination cases are kept rather shallow for an overall compact design. If you use large amplifiers, it might be more practical to order a double-door flight case.