CurveEQ is a spline equalizer plugin designed for professional sound and music production. It offers a clear visual representation of the filter response through smooth spline curves, alongside an output spectrum display that reveals how the equalizer shapes the audio. This intuitive interface helps producers and engineers achieve precise control over their mixes, making CurveEQ especially suitable for mastering applications where accuracy is critical.

One of CurveEQ's standout features is its spectrum matching technology, which enables the transfer of frequency balance from one recording to another. This capability allows users to emulate the tonal characteristics of reference tracks, enhancing the consistency and polish of mixes in progress. By reducing significant frequency imbalances between different tracks, this function proves invaluable during the mastering process, helping to unify diverse elements into a cohesive final product.

CurveEQ supports both linear-phase and minimum-phase filtering modes, accommodating different mixing and mastering needs. It includes a customizable real-time spectrum analyzer, similar to those found in advanced audio tools, and offers the ability to save and compare static spectrum plots. Additional features include multi-channel processing, mid/side capability, internal routing, undo/redo history, preset management, and a resizable, high-resolution interface. These attributes combine to provide a powerful, flexible equalization environment suitable for a wide range of audio production tasks.