The PCM 91 Digital Reverberator offers Lexicon's highest quality reverbs in a compact, affordable package with a powerful interface which allows both easy access and a wealth of programming capabilities for the sound designer. All of the features of the acclaimed PCM 90 are included, plus full AES/EBU I/O, new Dual Reverb algorithms, and new presets with dynamic spatialization effects for 2-channel or surround applications. All of the Dual Reverb algorithms and presets (available for the PCM 90 on a PC card) are built into the PCM 91. 450 presets provide sounds for real-world applications� and a unique KeyWord search and sort function allows you to find the preset you want fast. A PCM CIA card slot allows you to store your own programs on memory cards.