The DOD FX747 Super Sonic Stereo Flange is an analog modulation pedal produced between 1996 and 1998 as part of the "Lamb" series. It provides a wide range of flanging effects, from subtle tonal movement to dramatic jet-engine sweeps. The circuit utilizes four distinct controls uniquely labeled as Payload, Mach, Altitude, and Thrust to manipulate level, speed, width, and regeneration. Its dual outputs allow for a true stereo image, enhancing the spatial depth of the effect. The pedal features a rugged metal chassis and a large rubberized footswitch typical of late-90s DOD designs.