The making of Sequential’s all-analog, polyphonic, expressive Fourm

Sequential’s new Fourm is a 4-voice polysynth with an all-analog signal path and polyphonic aftertouch and a price under a grand. To pull it off, Sequential designed an all-new expressive keybed and adapted their signature analog circuitry from the Prophet-5 (and Prophet-10). I spoke to Sequential about their instrument and the engineering that made it all happen.

Tom Oberheim turns 89 today; a conversation with Tom

Tom Oberheim may be in retirement, but the instruments and his legacy are just getting started. Artists are rediscovering vintage classics, and instruments like the new TEO-5 are taking off. So to celebrate his 89th birthday, here’s a recent conversation with the man behind that famous synth name.

Peter Kirn - July 7, 2025

Oberheim TEO-5: Tom’s legacy, now on desktop, $1399

They’re built on the same platform, the development of which was overseen by the late Dave Smith. They cost roughly the same price and take up the same amount of space. But TEO-5 is not Take 5. Look to the Oberheim desktop instrument for the SEM multimode filter, linear through-zero FM, and its own unique effects. Here’s the synth Tom and team built.

Peter Kirn - July 1, 2025

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