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.

Features at a Glance
All of the features of the PCM 90 PLUS built-in Dual Reverb
AES/EBU and S/PDIF I/O
15 Algorithms: 5 Stereo and 10 Dual Reverb
450 Preset programs; 100 User
Dynamic spatialization effects for 2-channel or surround applications

Standard Features
Lexicon's "greatest hits" – reverb algorithms of the last decade including Random Hall, Random Ambience, Rich Plate, Concert Hall and Split Chamber
Balanced Analog I/O- XLR and 1/4" inputs and outputs
Digital I/O- S/PDIF and AES/EBU
Keyword Search: Allows quick, intelligent search of the presets by application (i.e. vocals, drums etc.) or alphabetical order
A front panel Adjust knob is automatically attached to one or more of the parameters you're likely to want to change in each factory tailored preset. This allows immediate modification of each preset in real time without ever going into the Edit mode.
Pro and Go Modes: Go mode gives you access to as many as ten hand-picked parameters for any particular preset. Pro Mode allows full access to an Edit Matrix of as many as a hundred parameters.
Greater than 110dB of Dynamic Range
Dual Lexichip Architecture- These are our own propietary microprocessors, custom designed by our own chief scientists to meet Lexicon's rigorous specifications.
PCMCIA Card Slot for software updates and user-edited preset and system set up storage.
50 Factory Presets and 100 Internal User registrations are standard. .