Hollow is an expansive space reverb plugin designed to create natural and immersive reverberation effects. Its core features a sophisticated delay network with 24 delay lines, 32 filters, and a complex feedback matrix capable of producing reverb tails lasting over 15 minutes with smooth exponential decay. This powerful engine delivers a spacious and three-dimensional sound that enhances any audio source with lush ambience.

Unique to Hollow is its bi-directional pre-delay, which allows the reverb tail to either follow or precede the dry signal, enabling innovative sound design possibilities. The plugin also includes a variable diffusion stage and unison-style modulation through four phase-shifted sine oscillators that add depth and chorus-like richness to the reverberation. Adjustable low-pass and high-pass damping filters, along with stereo width control, further shape the spatial character of the effect.

Hollow supports multiple channel configurations including mono to stereo and stereo to stereo, ensuring flexibility in various mixing setups. The user interface features color-coded controls with consistent parameter naming and values for streamlined automation and preset management. Compatible with AAX, AU, and VST3 formats on both macOS and Windows, Hollow offers scalable window size and smooth parameter adjustments for a refined user experience.