Synthesizer Expander Module Bundle

The Synthesizer Expander Modules are emulations of the classic Oberheim® Synthesizer Expander Module, aka the "SEM." Originally released in 1974, the keyboardless, mono SEM module was intended as a companion to the Oberheim DS-2, one of the earliest digital sequencers.

The Voltage Modular Synthesizer Expander Modules are similar to the "patch panel" SEM reissues released in the 2000's - exactly like the original 70s versions, with the addition of an extensive patch panel for modular flexibility. Featuring a circuit-correct recreation of the SEM’s 12 db/oct state-variable filter, programmed by award-winning synth designer Mark Barton (MRB), the Synthesizer Expander Modules sound incredible! The Synthesizer Expander Module Bundle includes mono and poly versions of this classic instrument.

Disclaimer: Oberheim® and SEM are trademarks of Tom Oberheim. There is no association, affiliation or endorsement of Cherry Audio or its products by Tom Oberheim.

Doc Joe

Mar 20, 21

Wowsa. A fat cat thatll bring an ears-wide grin to you

When I sawe the launch of the Eight Voice, and said - I gotta get me some of that in Modular. And the Synth Expander did not disappoint. Right out of the box, this baby delivers that fat, robust sound you want. String a few together and you get teeth-melting goodness. Well worth the price!

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  • Synthesizer Expander Module Demo - Eric Levy.mp3