The MX400 from Lexicon is a stereo/surround multi-FX processor offering rich, luscious reverbs, delays and modulation effects in a hardware unit with the flexibility of DAW VST/AU plug-in integration and without bogging down your CPU or resorting to expensive processing cards. The quad processing unit is equipped with four 1/4" inputs and outputs, two digital RCA (S/PDIF) inputs and outputs, and a USB cable, which provides control of all automation and recall parameters as you would with a software plugging, but with the sonic benefits that only Lexicon hardware can offer.