The PCM-80 is one of the later quality Lexicon hardware digital reverbs and the successor of the venerable PCM-70.
A very good sounding device, with quality convertors and digital I/O that allows you to match it with DAWs and digital mixers.
It contains the acclaimed Lexicon reverb algorithms, but also sports a wide range of other DSP (Delay, Pitch Shift etc.) that can be combined with the reverb algorithms to create very deep sounding and complex effects.
Programs can be selected over MIDI, but the Bank Select command is oddly implemented, which complicates correct program changes.