IR-1 is a convolution reverb that offers a comprehensive set of classic reverb controls, setting it apart from other convolution reverbs. It enables detailed editing of traditional parameters such as reverb time, room size, and decay envelope, providing users with extensive flexibility to shape their sound. The plugin includes a vast library of impulse responses, capturing over 60 real acoustic spaces along with more than 60 presets inspired by classic hardware reverbs, delivering authentic sonic environments for any production.

The reverb time control in IR-1 is particularly innovative, allowing users to shorten or lengthen the reverb decay up to four times while maintaining natural acoustic coherence and preserving the impulse response's tonal characteristics. Size adjustments apply acoustic modeling to early reflections, enabling the space to be scaled without losing its unique qualities. The decay envelope is highly customizable through a graph-based interface, offering unlimited possibilities to sculpt the reverb's tail. Additional features include density control for adjusting the space’s reflective complexity, resonance shaping based on room modes, and decorrelation for enhanced stereo spaciousness.

IR-1 also provides independent control over early reflections, reverb tail, and direct sound, allowing precise gain and pre-delay adjustments for each component. Its damping system uses advanced filtering to manage low, mid, and high frequencies proportionally with reverb time, while a four-band paragraphic EQ offers further tonal shaping. Despite its powerful capabilities, IR-1 is designed for efficient CPU usage with a low CPU mode and adjustable convolution length, ensuring high-quality reverb effects without taxing system resources excessively. This makes IR-1 a powerful tool for producers seeking detailed control and realistic reverberation.