PSP PianoVerb is not a general purpose Reverb plugin (which emulates real spaces environment such as hall, room etc.). Actually, I don’t know about any other Reverb plugin that will give you similar sound.
PianoVerb reproduces special kind of reverberation originally provided by piano strings. It’s an original idea – It generates reverberation using twelve string operators with adjustable damping and decay time. Each of them is tuned to a particular note starting from A(55Hz) to a G#(103.8Hz). The PSP PianoVerb string system can be transposed which, if transposed lower, produces a bigger and less resonant sound similar to traditional reverbs, while in turn transposing to higher octaves produces a very bright harp-like effect.
It does sound lovely for piano instruments as well as clav, harpsichord or some keyboard sounds. Maybe even guitars. It’s really unique reverb, developed by one of the most respected companies, definitely worth having in your arsenal.
Download: PSP PianoVerb