Chasing DFAM’s “stepless” feel across other synths

We explored how to approximate Moog DFAM’s analog, continuously variable sequencer on other hardware and how these devices interoperate.

DFAM baseline

•	DFAM’s pitch row is analog and stepless. You can tune “between” notes.

Arturia MiniBrute 2S

•	The two Mod tracks output continuous CV (V/Oct).
•	Patch Mod → DFAM VCO Pitch to get micro-intervals. Set a small range and attenuate for finer steps.
•	To sequence the 2S itself steplessly, patch SEQ MOD → VCO 1 Pitch.
•	The VCO Pitch jack breaks the internal pitch. To add micro-offsets while keeping base pitch, sum KBD CV + SEQ MOD in the 2S VCA (or an external mixer) → VCO Pitch.
•	Alternative nudge: route SEQ MOD → VCO 1 FM for subtle bends (not V/Oct accurate).

Arturia MatrixBrute

•	Use the Sequencer “Mod” lane as a source in the matrix.
•	Route Seq Mod → VCO Pitch for wide continuous offsets, or Seq Mod → VCO Fine for precise micro-intervals.
•	Per-step Slide and Glide smooth transitions.

Sequential Pro 3

•	Assign a sequencer track as a modulation source.
•	Route Seq Track → Osc Fine Freq with a small amount for near-stepless offsets.
•	Enable Slew on that track for glide.
•	Optional: alternate tunings for quantized microtonal steps.

Buchla vs Eurorack compatibility

•	Different standards: ~1.2 V/oct, banana/Tini-Jax connectors, separate ground, higher pulse levels.
•	Bridge with a format jumbler plus 1.2↔1 V/oct and gate/level translators.
•	Eurorack-native “Buchla flavor”: Tiptop/Buchla 200t series.

Tiptop/Buchla 200t that feels DFAM-like

•	245t Sequential Voltage Source: per-stage continuous controls across multiple rows. Works as a stepless pitch sequencer when patched to an oscillator.

Takeaways

•	You can approximate DFAM’s stepless workflow on MiniBrute 2S, MatrixBrute, and Pro 3 by routing a continuous sequencer lane to pitch or fine pitch and managing range/attenuation.
•	For Buchla aesthetics in Eurorack without adapters, the 245t provides per-step continuous control similar in spirit to DFAM’s row.
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