The AE400 is a sophisticated active equalizer designed for a wide range of audio applications including music production, post-production, and live sound environments. It features four fully overlapping EQ bands, each equipped with independent controls for bandwidth, fixed gain, and active gain. This design allows precise shaping of the sound, with each band offering a key filter that adjusts the active gain's selectivity based on the bandwidth setting. Users can choose to trigger the active EQ response using either the input signal or a dedicated side chain signal, providing flexibility in dynamic equalization.

This active equalizer excels in enhancing vocal tracks by highlighting key signal peaks, helping users identify where the most energy is focused. It is also effective for vocal insertion techniques, allowing the main mix to be processed through the AE400 while using the vocal track as a side chain input. This setup enables precise frequency targeting to control how vocal elements interact with the mix. Additionally, the AE400 proves valuable on drum busses by enabling careful attenuation of frequencies, balancing boosts applied to elements like the kick drum for a cleaner overall sound.

The AE400 boasts features such as selectable EQ modes for both fixed and active bands, unique ratio response control for its active EQ, and double precision processing to ensure high audio fidelity. Zero latency operation makes it suitable for live performance and real-time mixing. It includes mono and stereo versions along with a collection of presets crafted by experienced mix engineers, providing users with immediate starting points and inspiration for their projects. This equalizer delivers detailed and dynamic control to enhance any audio production.