The Dan Dugan Model E is a professional automatic mixing controller designed to intelligently manage multiple microphone channels in complex sound reinforcement environments, such as conference rooms, courtrooms, houses of worship, and broadcast studios. Its primary function is to automate the process of turning microphone channels up and down based on which talker is active, thereby maximizing gain before feedback, reducing background noise, and ensuring consistent, clear audio without requiring a dedicated audio operator to manually ride faders. The unit employs Dan Dugan's patented gain-sharing algorithm, which continuously analyzes the input levels of all connected microphones and automatically adjusts their gains so that the total gain remains constant, preventing the "pumping" or "breathing" artifacts associated with older automatic mixers. This results in a natural, transparent sound where the system appears to "listen" and prioritize the person speaking.

Housed in a rugged hard carry case, the Model E is built for both permanent installation and portable use, protecting its sensitive electronics during transport between venues or for rental applications. The controller typically interfaces with a standard analog mixer via direct insertion into the mixer's channel inserts, allowing it to control the gain of each microphone channel independently. It features controls for adjusting parameters such as threshold, depth, and attack/release times for each channel or globally, enabling system tuners to tailor its response to the specific acoustics and usage patterns of a room. A key advantage is its ability to handle a large number of microphones (often 8 or more) simultaneously, making it ideal for panel discussions, legislative chambers, or any situation with multiple potential talkers.

The value of the Dan Dugan Model E lies in its ability to dramatically improve sound quality and system stability in multi-microphone setups. By automatically managing gains, it allows the sound system to operate at higher overall levels without feedback, ensures quieter participants are heard clearly, and reduces the comb-filtering and phasing issues that occur when multiple open mics sum together. For installers and sound engineers, it provides a set-and-forget solution that enhances the audience's listening experience and reduces operator workload. The inclusion of a hard case underscores its role as a professional, field-ready tool, ensuring that this critical piece of intelligence for a sound system remains protected and ready for reliable service wherever it is needed.