The Mod Reverb is a versatile reverb pedal offering three algorithms: plate emulation, spring emulation, and hall reverb. It features four streamlined controls for level, decay, tone, and drive. The pedal also provides three stereo spread settings at 0%, 50%, and 100%. The Mod Reverb allows players to shape their reverb effects based on their playing style, with options like creating gated reverb, adjusting reverb tone for different note ranges, and achieving inverse decay effects.