Product Detail 4-input/4-output TRS dual stereo/surround reverb and effects processor 34 legendary Lexicon reverbs, delays, effects and dbx dynamics 24-bit, 48kHz/44.1kHz sample rates 223 Factory presets including 25 surround programs Unique USB "Hardware Plug-In" feature with VST and AU plug-in software . The "Lexicon MX400 Dual Stereo/Surround Reverb/Effects Processor" is best product for you. We recommended Lexicon MX400 Dual Stereo/Surround Reverb/Effects Processor