StonEQ 4k offers a unique approach to equalization by blending characteristics from two distinct versions of a classic 4000-series EQ. Unlike many analog EQ emulations, it does not aim to replicate the original hardware exactly but instead delivers its own distinct color and behavior. This results in an equalizer that provides both precision and musicality, making it suitable for a wide range of mixing and mastering tasks.

The equalizer features four bands and two filters, each designed with flexibility in mind. The Width control allows for surgical correction at lower settings, ideal for cleaning up unwanted frequencies and resonances, while higher settings introduce a warmer, more musical tone. Additionally, the plugin includes a unique saturation feature that can be adjusted from subtle warmth to more aggressive overdrive, adding character and depth to your sound.

StonEQ 4k is optimized for modern production environments, supporting multiple plugin formats including Audio Unit, VST 2.4, VST 3, and AAX, with compatibility for both 32 and 64-bit systems on Mac OS X and Windows. It supports sample rates up to 192 kHz and operates with zero latency, making it an efficient and powerful tool for real-time audio processing. The interface is designed for ease of use with features like A/B comparison and a preset management system, helping you quickly achieve the desired tone.