The Synthesizer Expander Modules are emulations of the classic Oberheim Synthesizer Expander Module, aka the SEM. 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 offer rich, incredible sounding tone. The Synthesizer Expander Module bundle includes mono and poly versions of this classic instrument.

The MRB VM2500 collection represents a collaboration between Cherry Audio and MRB to deliver the unique module features, stunning sound quality and overall user experience of the classic ARP 2500 synth to the Voltage Modular platform. All 18 modules originally produced for the ARP 2500 system have been recreated in exact detail, as well as a couple that were planned but never produced—including a full-function oscilloscope and a spring reverb—and a mixer module.

The MRB VM900 collection delivers the audio and visual experience of the legendary Moog 900-series modules with spine-tingling impact and accuracy. Every detail has been expertly reproduced, for a virtual window into the halcyon days of early analog synthesis. Mark Barton’s (MRB) proprietary DSP coding reproduces each and every sonic nuance with unprecedented accuracy. From oscillator drift to warm mixer overdrive to painstakingly reproduced panel art, it’s all there.