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The rare Buchla Model 248 MArF is a cross between a sequencer and an envelope generator (both described elsewhere in this glossary) in that it typically contains 16 or 32 stages (sometimes referred to as “segments”), and a rate control to interpolate between these stages. This means very complex envelope shapes and other control voltage sequences can be created. Later on, Buchla used the term MARF to describe the multi-step envelopes in instruments such as the Buchla 400.

Interested in a modern update to the MArF? Sputnik Modular is working on one; the Rossum-Electro Control Forge is also rather MArF-like in its functionality (but with a completely different user interface).

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