Altiverb is a sampled acoustics Reverb plugin for that offers realistic one, two and four channel sampled acoustics of real halls, cathedrals, bathrooms and virtually any real acoustic environment. Included are dozens of acoustic samples ranging from the Amsterdam Concertgebouw to bathrooms and closets. Altiverb also lets you sample acoustic spaces - or hardware reverbs - on your own. Includes all of the IR's up to 28 April 2010.