AU3FX:PeakQ is a versatile 4-band parametric stereo equalizer AUv3 plugin designed for a wide range of audio enhancements and effects. Developed by Kymatica AB, this plugin is part of the AU3FX series, offering a collection of simple yet powerful audio unit effect plugins.

With a high-quality 32-bit DSP engine, AU3FX:PeakQ features two parametric peak filters with gain, frequency, and Q controls, a low-shelf filter, and a high-shelf filter. Each band can be toggled on or off individually, allowing for precise adjustments. The plugin also includes an interactive frequency response curve, real-time FFT spectrum analyzer, bundled presets, and the ability to save/load session states within the host application.