FabFilter Pro-Q 4 Upgrade from Pro-Q 1, Pro-Q 2, or Pro-Q 3

The FabFilter Pro-Q 4 Upgrade is for existing owners of Pro-Q 1, 2, or 3 who want the latest version of this industry-standard 24-band EQ. Version 4 adds spectral dynamics, an instance list, EQ Sketch drawing, and vintage saturation, building on the precise sound and workflow that made Pro-Q a go-to for mixing and mastering. You get zero-latency, Natural Phase, and linear phase modes, smooth dynamic EQ, per-band mid/side processing, and full surround support up to Dolby Atmos 9.1.6. The large interactive display lets you create and edit bands quickly, with Spectrum Grab, EQ Match, and full-screen mode for fast, precise shaping. It suits hobby producers and engineers who need a flexible, high-quality EQ for surgical fixes, tonal balance, and creative sound design in FL Studio, Ableton, or Logic.