SplineEQ

SplineEQ by Photosounder is a linear-phase EQ plugin that lets you shape frequencies by drawing Bézier spline curves rather than selecting conventional filter types. Its flexible approach suits producers who prefer visual control, whether making broad tonal adjustments, carving out unwanted frequencies or bringing quiet harmonics forward. Linear-phase processing changes frequency levels without altering their phase, making it useful when preserving phase relationships matters. The full version supports up to 60 bands, while whole-curve controls let you shift the frequency position, adjust overall gain or flatten, exaggerate and invert your EQ shape. A colour-based frequency analyser displays the signal before and after processing, helping you connect what you hear with what you see. With a gain range from complete attenuation to +60 dB, SplineEQ accommodates both subtle balancing and extreme spectral reshaping.