Music Device Project have released version 2.50 of SAS-2A. The update adds a monophonic mode and a new digital delay, as well as other improvements.
The SAS-2A (SAS-1 ver2) is a nostalgic dualphonic virtual analog synthesizer for iPad based on the Oberheim OB-Xa. If you know OB-X operations, SAS-5A is easy to operate. However, the output tone is different from the OBX.
For more information about SAS-2A click here.