UsefulSynthCircuits has introduced a mod for the classic Oberheim SEM Synthesizer Expander Module that expands its synthesis capabilities with two octaves of sub bass.
Here’s the official demo:
Note: The mod is a simple DIY project, but does require basic soldering.
Pricing and Availability:
The SEM Sub Osc Module (1974 – 1979) is available now for $45 USD.
good stuff! great price!
Yes, but how do you get the module in the first place?