Solid State Logic 729740X2 Fusion Stereo Outboard Processor

The Solid State Logic Fusion (729740X2) is an all-analog stereo outboard processor designed to sit across your mix bus or stereo stems, providing five discrete coloration tools in a single 2U rackmount chassis. The Violet EQ offers gentle two-band shelving with minimal phase shift for broad tonal shaping. The Vintage Drive circuit introduces non-linear harmonic saturation that can range from subtle warmth to more audible analog grit. The HF Compressor provides frequency-selective compression that smooths and rounds harsh high frequencies without dulling the overall mix. A custom-wound SSL Transformer circuit adds low-frequency saturation and characteristic high-frequency phase shift reminiscent of classic console designs. Finally, the Stereo Image section lets you widen or narrow the stereo field to place your mix precisely in the soundstage.

What sets the Fusion apart from simpler summing or coloration boxes is its flexible insert loop. In stereo mode, you can patch in additional stereo processors like the SSL Bus Compressor either before or after the Violet EQ. Switch to mid/side mode, and you can insert two different mono processors independently across the mid and side components of your mix, opening up creative possibilities that would otherwise require a dedicated M/S matrix. The SuperAnalogue signal path features center-detented ±12dB input and output trim controls for meticulous gain staging, while the master meter with 3-second peak hold gives you clear visual feedback. Every processing section can be individually bypassed, and adjustable front-panel brightness lets you tailor the unit's appearance to your working environment.