Lexicon is considered the Grand Daddy of digital reverb, being one of the very early manufacturers in the reverb market. The company was among the first to produce commercially available digital reverb equipment, beginning in 1978/79 with the Lexicon 224. Also released in 1979 was the Lexicon Prime Time, one of the first digital delay units designed explicitly to provide effects. In 1986, Lexicon released the 480L, a successor of the Lexicon 224XL. The Lexicon PCM series was introduced as a smaller, more economical option particularly in live situations where the 224XL was too costly and cumbersome for a live effects rack. First in the series was the Lexicon PCM-60, followed a few years later by the Lexicon PCM-70, the latter adding multi-effects from the 224X and a digital screen interface.
In the 1990s Lexicon continued the PCM series with two new units, the Lexicon PCM-80 reverb/multi-effects unit and Lexicon PCM-90 digital reverb. Lexicon continued the PCM series in the 2000s with new mid-level units including the Lexicon PCM-96 and PCM-96 Surround, standalone reverb units that easily integrate into DAWs. In the 1990s Lexicon released the consumer-level LXP series including the Lexicon LXP-1, LXP-5, LXP-15 and the LXP-15II, and later the affordable Lexicon MPX1. A new low-priced reverb series, the MX series, was introduced in the 2000s, with the Lexicon MX200 as the entrance model.
In 1993 the Harmon Group purchased Lexicon, and as happened many times before, innovation seemed to stop. Instead of a new top end reverb processor, cheaper models in the MX range were released. The last hardware effects processor of note was the PCM92 released in 2009. The algorithms from which have been available in plugin form in PCM Native Reverb Bundle and PCM Native Effects Bundle, but it is still the older hardware reverbs that most people lust after. Models like the 224, 480L and certain PCM series such as the Lexicon PCM70.