The Aphex Model 720 Dominator II is a professional-grade, two-channel multiband peak limiter designed for rigorous dynamics processing in mastering, broadcast, and high-end audio production. This rack-mountable unit employs a sophisticated four-band compression/limiting architecture, dividing the audio spectrum into independently controllable frequency ranges (typically sub, low, mid, and high). This allows engineers to apply precise gain reduction exactly where it is needed—taming excessive bass without affecting vocal clarity, or controlling harsh high-frequency transients without dulling the mix—resulting in a louder, more controlled, and punchier output while minimizing audible artifacts. The Dominator II is renowned for its ability to increase perceived loudness and density without the "pumping" or "breathing" often associated with single-band limiters.

Operation is centered around its comprehensive control set. Each of the four bands features threshold, ratio, attack, and release controls, along with a "Dominance" control that adjusts the band's character from a softer compression to a harder limiting action. A key feature is the proprietary "OverEasy" function, which provides a smooth, musical transition into compression, reducing distortion on transients. The unit includes both input and output metering, a master output ceiling control to prevent intersample peaks, and stereo linking for maintaining the stereo image when processing a two-channel mix. Its robust, transformer-balanced analog circuitry is designed for both transparency and musicality, making it a trusted final-stage processor for music mastering engineers and broadcast audio technicians.

Housed in a standard 2U rack-mountable chassis, the Dominator II is built for reliability in demanding studio and on-air environments. It serves as a critical tool for achieving competitive loudness levels while preserving dynamic interest and clarity. The Aphex Dominator II represents a pinnacle of analog multiband limiting technology, offering unparalleled control for shaping the dynamics and impact of a finished audio program.