DMX Controller With Headphones Back Of Neck Lightweight Headphones DMX Controller The Obey 40 is the next step up from the Obey 10, allowing for control of up to 12 fixtures at 16 channels each. With a slightly larger size comes a larger capacity: the Obey 40 has 30 banks on 8 scenes, or up to 240 scenes. The Obey 40 offers the flexibility of its little brother but also adds fog and strobe control and MIDI compatibility.