smart:EQ 4

Sonible's smart:EQ 4 represents a meaningful evolution in AI-assisted equalization, moving beyond single-track correction toward genuinely contextual mixing. The plugin analyzes spectral content and applies corrective EQ automatically, but its real strength lies in its hierarchical approach to multitrack mixing. Unlike conventional EQs that process in isolation, smart:EQ 4 allows multiple instances within a group to communicate and coordinate their adjustments, enabling simultaneous unmasking and tonal balancing across an entire mix layer.

The technical foundation remains the smart:filter - a dynamically generated EQ curve that targets problematic frequencies and masking issues. Version 4 adds a Smoothing parameter that produces gentler filtering slopes, reducing artifacts from aggressive corrections. The plugin now supports genre-based Mix Profiles and reference-track matching, giving the AI meaningful targets beyond generic "balance." Additional refinements include Dynamic EQ capabilities with compressor-style controls for frequency-dependent dynamics, and Auto Gain compensation to counteract level shifts from processing.

Remote control from a single instance window represents perhaps the most workflow-relevant improvement, allowing engineers to adjust multiple tracks while maintaining mix perspective rather than diving into individual plugin windows.

Smart:EQ 4 suits producers and engineers seeking to accelerate spectral analysis and correction, particularly those working with dense arrangements where manual EQ decisions become laborious. It functions well as either a starting point for further refinement or a standalone mixing tool, though its value increases substantially when managing multiple tracks simultaneously. While AI-assisted EQ remains subjective by nature, smart:EQ 4's multitrack coordination philosophy addresses a genuine mixing problem that traditional tools sidestep.