The Solid State Logic XR626 brings the absolute pinnacle of stereo bus compression—the legendary SSL G-Series center section compressor—into the modular X-Rack ecosystem. Known globally as the definitive "mix glue" processor, this dual-slot VCA compressor is engineered to bind disparate tracks into a cohesive, punchy, and radio-ready record.

What makes the XR626 a standout implementation of the iconic circuit is the combination of traditional analog mojo and modern SSL precision. Featuring full integration with SSL’s Total Recall™ system, pristine high-headroom VCA architecture, and a switchable sidechain high-pass filter, it allows engineers to drive the mix bus hard for maximum energy and impact without letting heavy kick drums or sub-bass pump the gain reduction circuit.

The Solid State Logic XR626 is an X-Rack series stereo bus compressor module designed to bring the legendary sound of the SSL G-Series Center Section Compressor to a compact, modular format. Built around the same classic VCA topology as the iconic 1980s G-Series analog console, the XR626 delivers the unmistakable cohesion, punch, and mix-gluing drive that has defined thousands of hit records across decades of music production.

Engineered for critical mix bus compression, sub-group processing, and mastering applications, the XR626 features total reset integration via SSL's Total Recall™ system. It offers traditional SSL controls—including variable threshold, ratio ($2:1$, $4:1$, $10:1$), attack, release, and makeup gain—alongside key modern enhancements such as an integrated sidechain high-pass filter and an external sidechain insert key. The result is a high-headroom, low-distortion stereo dynamics processor capable of turning a collection of individual tracks into a unified, polished mix.

Key Features

• Classic SSL G-Series Bus Compressor Topology: Genuine SSL VCA gain-reduction circuit designed to add cohesive "glue," power, and dynamic control to stereo mixes and instrument buses.

• SSL Total Recall™ Compatibility: Onboard LED indicators and digital architecture interface directly with SSL’s Total Recall network for instant, high-precision manual resetting of all hardware pot positions.

• Selectable Compression Ratios: Includes classic $2:1$ (gentle mix bus leveling), $4:1$ (punchy drum and mix compression), and $10:1$ (hard peak limiting) options.

• Switchable High-Pass Sidechain Filter: Integrated low-frequency filter in the sidechain detector path prevents heavy bass frequencies and kick drums from pumping the compression circuit.

• External Sidechain Input: Key input functionality enables creative ducking, sidechain pumping, and targeted external signal triggering.

• Auto-Release Setting: Dual-time-constant release option automatically adjusts release speed based on incoming transient duration to preserve dynamic open-ness.