The ADJ D6 Branch was a professional, rack-mountable DMX-512 splitter and amplifier designed to manage and distribute DMX control signals in large or complex lighting rigs. Its primary function was to take a single DMX input signal and output it to six isolated, amplified outputs. This isolation is critical in professional lighting because it prevents electrical problems (like a short circuit or ground loop) on one output leg from affecting the entire DMX network, ensuring system stability. The amplifier circuitry regenerated a strong, clean DMX signal on each output, allowing for longer cable runs and reliable control of many fixtures.

This unit was specifically designed for permanent installation or touring use, with a sturdy metal rack-mount chassis (1U height). It featured both 3-pin and 5-pin XLR connectors for its input and outputs, catering to different industry standards. A key feature was its ability to be powered via a standard IEC power cable or directly from the DMX input line using phantom power (9-12V DC), which was particularly useful in truss-mounted situations where running a separate power cable was inconvenient. Status LEDs for power and signal on each output provided clear visual diagnostics for troubleshooting. The "truss-mounted" aspect referred to its robust build and optional mounting ears, making it suitable for securing directly to lighting truss.

The D6 Branch was discontinued as product lines evolved, likely succeeded by units with updated electronics, different form factors (like the popular "D4" series), or additional features such as LCD displays or RDM support. During its time, it was a reliable workhorse for lighting technicians, providing a simple, effective solution for splitting DMX signals to multiple lighting zones, such as different trusses, stage wings, or architectural sections.