Oberheim

American synthesizer maker, founded 1969, wound down in 1985, and trading again since 2022 under new ownership. Its SEM (Synthesizer Expander Module) and the Four Voice System of 1975 — four SEMs in one instrument — are the designs miltone now rebuilds as the miltone-4exp. Discovered while ingesting miltone-4exp.

Paged as the original maker, not as a current vendor: everything the corpus knows about Oberheim so far comes through a recreation of a 51-year-old product.