The Ott-Organ is a beautiful tiny rehearsal instrument, which was published in 2004 by Christian Datzko. This tracker organ was built by Dieter Ott (Göttingen in Northern Germany) in 2003. It has initially 5 Stops on one manual (56 keys). The manual is always coupled to the pedal (30 keys). The original stops are Gedackt 8', Rohrflöte 4', Prinzipal 2', Quinte 1 1/3' and Oktave 1'.
The extension adds the following features: