The Symetrix 565E is a professional, dual-channel dynamics processor housed in a single rack unit, providing comprehensive control over audio levels through independent compressor, limiter, and expander/gate functions on each channel. It is engineered for critical applications in broadcast, recording, live sound reinforcement, and installed audio systems where precise manipulation of dynamic range is essential. Each channel functions as a complete, standalone dynamics processor, allowing engineers to apply compression to smooth vocal performances, use limiting to prevent overloads in fixed-level distribution systems, employ expansion to reduce noise during silent passages, or utilize gating to control problematic microphone bleed. The unit's versatility and transparent operation make it a valued tool for both creative sound shaping and essential system protection.

The signal path of each channel is highly configurable, featuring fully adjustable parameters for threshold, ratio, attack, release, and output gain. A distinctive feature of this series is its intelligent sidechain access, which allows external signals to trigger the dynamics action, enabling advanced techniques like de-essing or frequency-conscious compression. The compressor and limiter sections are designed to operate with minimal audible artifacts, preserving the natural character of the source material while effectively controlling peaks and increasing perceived loudness. The expander/gate section offers a wide range of attenuation, from subtle noise reduction to complete muting, with adjustable hold and release times to achieve a natural sound. The combination of these tools in one unit provides a powerful solution for managing inconsistent input levels and cleaning up audio signals before they reach a mixer, recorder, or transmission chain.

Built to the rugged standards expected of professional studio and touring gear, the 565E features balanced inputs and outputs on both XLR and 1/4" TRS connectors, robust analog circuitry, and a clear, logical front-panel layout with dedicated controls for each function. Its sonic character is known for being clean and unobtrusive, focusing on functional control rather than imparting a specific tonal color, which has made it a reliable workhorse in diverse audio environments. By offering two channels of high-quality, flexible dynamics processing in a compact and reliable package, the Symetrix 565E serves as a fundamental building block for achieving polished, controlled, and professional audio across a wide spectrum of applications.