PSP PianoVerb2 is a redesigned and improved creative resonant reverb plug-in (VST, AAX and RTAS for Windows; AudioUnit, VST, AAX and RTAS for Mac OSX) plug-in based on our famous and beloved freeware plug-in PSP PianoVerb. Like the original PianoVerb it creates its unique sound with twelve resonant filters that mimic the behavior of piano strings.