SEM-PRO Analog Synthesizer Module

The SEM was Tom Oberheim’s first synthesizer, much beloved for its beautiful sound and just the right combination of synthesis modules plus patching in a compact, portable package. Over the years, many people have asked Tom if he could make it again, so he did!

This is the fully decked-out version of the SEM with MIDI to CV Converter and integrated Patchpanel. This version combines the features of the MIDI to CV version with a 21-jack patchpanel and is personally autographed by Tom Oberheim.

Select MIDI channel, controller number and bend range
Select note assignment modes: latest, high note and low note priorities
Select note re-trigger, filter track, LFO reset
A second independent control bus allows velocity, controller data, or channel pressure to modulate either or both VCOs, the filter and the VCA
Transpose function allows different keyboard controllers to utilize the complete MIDI note range
Analog portamento
Input preamp gain control - allows an external audio input to be processed thru the SEM
High precision A-440 Hz tune signal
Control voltages and gate are bought out to rear panel connectors so MIDI to CV function can be used with other CV/Gate gear