The USB-Octomod is a USB device which allows generation of computer-controlled analog synthesizer control voltages in the range of approximately +/- 5V. Using a small open-source and cross-platform host application, the user is able to control the 8 output channels of the Octomod through a simple OSC/MIDI interface. The OSC interface allows composers, musicians, etc. to control the Octomod from their software environment of choice.