DFAM

Moog Music 60HP
DRUM SEQUENCER VCO OSCILLATOR VCF

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Drummer From Another Mother. Semi-modular analog percussion voice: 2 VCOs, noise, 24dB Moog ladder filter LP/HP, three decay envelopes and an 8-step analog sequencer with per-step pitch and velocity.

Patch Ideas · 12

★ DFAM + Mother-32 sync
Mother-32 ASSIGN out clocks DFAM's step advance so both instruments play locked together.
Walkthrough
  1. On Mother-32, set the ASSIGN output to Clock (see Mother-32 manual Setup).
  2. Patch Mother-32 ASSIGN out → DFAM ADV/CLOCK input.
  3. Press RUN/STOP on DFAM first so it arms and waits for clock pulses.
  4. Press RUN/STOP on Mother-32 — DFAM advances one step per incoming pulse.
  5. Optional: patch Mother-32 KB out → DFAM VCO 1 CV for shared pitch tracking.
  6. Patch DFAM AUDIO OUT (rear) → mixer.
Signal out AUDIO OUT (rear 1/4") or VCA patch jack — DFAM drum voice clocked in lockstep with Mother-32.
Listen for DFAM fires one hit per Mother-32 clock pulse. Change Mother's internal clock division and DFAM's 8 steps shift against Mother's sequence polyrhythmically.
▸ Show diagram
Patch diagramPatch diagram with 2 modules and 2 connections. Modules: DFAM, Mother-32. Signals: 1 pitch, 1 clock.DFAMMother-32RUN/STOP armed: ASSIGN: ClockADV/CLOCKclkVCO 1 CV1v/octASSIGNclkKB1v/oct11. optional tonal followpitchclock
Dual DFAM chain
Primary DFAM's TRIGGER output clocks a secondary DFAM so both units step together with independent pitch/velocity/decay per step.
Walkthrough
  1. Patch DFAM A (primary) TRIGGER out → DFAM B (secondary) ADV/CLOCK input.
  2. On both DFAMs, set SEQ PITCH MOD switch to VCO 1&2 and dial contrasting PITCH and VELOCITY patterns.
  3. Press RUN/STOP on DFAM B first so it is armed and waiting.
  4. Press RUN/STOP on DFAM A — both units now step together.
  5. Patch DFAM A VCA out → mixer left input.
  6. Patch DFAM B VCA out → mixer right input for stereo layering.
Signal out Two VCA outputs — one drum voice per DFAM, panned hard L/R.
Listen for Both units advance on the same clock, but each has its own 8 pitches, velocities and decays — two layered drum voices perfectly locked in time.
▸ Show diagram
Patch diagramPatch diagram with 3 modules and 3 connections. Modules: DFAM A, DFAM B, Output. Signals: 2 audio, 1 clock.DFAM ADFAM BOutputPrimary · RUN/STOP armed second: Secondary · RUN/STOP armed first: TRIGGERclkVCAaudioADV/CLOCKclkVCAaudioLaudioRaudioaudioclock
★ Kick + snare in one voice
Alternate low/high PITCH per step and add noise on snare steps for a two-part drum pattern from a single DFAM.
Walkthrough
  1. Start from default settings; press RUN/STOP to begin playback.
  2. Set the SEQ PITCH MOD switch to VCO 1&2.
  3. Turn PITCH knobs 1, 3, 5, 7 fully CCW (low = kick).
  4. Turn PITCH knobs 2, 4, 6, 8 to around 1 o'clock (higher = snare).
  5. Set VCO 1 EG AMOUNT to ~2 o'clock and VCO DECAY to ~9 o'clock for kick thump.
  6. Set the VCA EG switch to FAST; set VCA DECAY to ~10 o'clock.
  7. Turn NOISE/EXT LEVEL to ~1 o'clock so snare steps get body.
  8. Optional: patch an external LFO → DFAM NOISE LEVEL input to swell noise across bars.
  9. Patch DFAM VCA out → mixer.
Signal out VCA out — alternating kick+snare pattern, mono line-level.
Listen for Odd steps punch a deep pitched kick; even steps hit a brighter snare with noise body. At ~120 BPM this reads as a basic 4-on-the-floor beat.
▸ Show diagram
Patch diagramPatch diagram with 2 modules and 1 connection. Modules: DFAM, LFO. Signals: 1 cv.DFAMLFOSEQ PITCH MOD: VCO 1&2PITCH 1,3,5,7: low (kick) · 2,4,6,8: mid (snare)VCO 1 EG AMT: 2 o'clockVCA EG: FAST · VCA DECAY: ~10 o'clockNOISE LEVELcvOutcv11. optional noise swellcv
★ Sequenced bass voice
DFAM plays a tuned 8-note bass line with long VCA decay and slow attack for glide-feeling notes.
Walkthrough
  1. Set both VCO FREQUENCY knobs to noon and both VCO EG AMOUNT knobs to noon.
  2. Set VCO 1 WAVE switch to triangle and turn VCO 2 LEVEL fully down.
  3. Turn VCO 1 LEVEL to ~2 o'clock.
  4. Set VCF switch to LP; CUTOFF to ~11 o'clock; RESONANCE to ~10 o'clock.
  5. Set VCF EG AMOUNT to ~2 o'clock and VCF DECAY to ~11 o'clock for per-note filter bloom.
  6. Set VCA EG switch to SLOW (100 ms attack emulates glide); VCA DECAY to ~12 o'clock.
  7. Set SEQ PITCH MOD switch to VCO 1&2; tune PITCH 1-8 knobs by ear to shape the bass line.
  8. Press RUN/STOP and refine each PITCH knob while it plays.
  9. Patch DFAM VCA out → external VCA/mixer.
Signal out VCA out — monophonic 8-step bass line, mono line-level.
Listen for Rubbery, laid-back bass line with filter bloom on each note. PITCH knobs are your note values; ADVANCE button auditions the next step while stopped.
▸ Show diagram
Patch diagramPatch diagram with 2 modules and 1 connection. Modules: DFAM, Clock. Signals: 1 clock.DFAMClockVCO 1 WAVE: triangle · VCO 2 LEVEL: 0VCA EG: SLOW · VCA DECAY: ~12 o'clockVCF: LP · VCF EG AMT: ~2 o'clockSEQ PITCH MOD: VCO 1&2ADV/CLOCKclkOutclk11. optional external clockclock
Filter as percussive oscillator
Silence the VCOs and noise, push RESONANCE into self-oscillation, and let the VCF ping per step as a tuned sine drum.
Walkthrough
  1. Turn VCO 1 LEVEL, VCO 2 LEVEL, and NOISE/EXT LEVEL fully CCW (all off).
  2. Set VCF switch to LP.
  3. Turn RESONANCE past 3 o'clock until a steady sine tone rings.
  4. Set CUTOFF to ~11 o'clock and VCF EG AMOUNT to ~3 o'clock for ping depth.
  5. Set VCF DECAY to ~9 o'clock so each hit is short and tuned.
  6. Set SEQ PITCH MOD switch to OFF.
  7. Patch DFAM PITCH out → DFAM VCF MOD input.
  8. Turn NOISE/VCF MOD knob fully CW (full depth from the patched VCF MOD jack).
  9. Dial PITCH 1-8 knobs to pitch each step of the tom sequence.
  10. Press RUN/STOP; patch VCA out → mixer.
Signal out VCA out — pitched sine ping per step, tuned by the PITCH 1-8 knobs.
Listen for A melodic tom sequence made entirely by the self-oscillating ladder filter — no oscillators needed. Each PITCH knob sets the cutoff for that step, so the sine pings at a different note.
▸ Show diagram
Patch diagramPatch diagram with 1 module and 1 connection. Modules: DFAM. Signals: 1 cv.DFAMVCO 1/2 LEVEL: 0 · NOISE/EXT LEVEL: 0VCF: LP · RESONANCE: ~3.5 o'clockCUTOFF: ~11 o'clock · VCF EG AMT: 3 o'clock · VCF DECAY: shortSEQ PITCH MOD: OFF · NOISE/VCF MOD: full CWVCF MODcvPITCHcv11. sequenced cutoff tuningcv
DFAM as 8-step CV sequencer
With SEQ PITCH MOD OFF, the PITCH and VELOCITY outputs become two independent step-CV rows driving external modules.
Walkthrough
  1. Set SEQ PITCH MOD switch to OFF — the VCOs stop tracking the sequencer, but PITCH/VELOCITY/TRIGGER jacks remain live.
  2. Patch DFAM PITCH out → destination 1 (e.g. external filter cutoff CV).
  3. Patch DFAM VELOCITY out → destination 2 (e.g. external VCA CV).
  4. Patch DFAM TRIGGER out → destination envelope gate/trigger input.
  5. Press RUN/STOP on DFAM.
  6. Tune PITCH 1-8 knobs for CV row 1 and VELOCITY 1-8 knobs for CV row 2 independently.
Signal out PITCH out (-5V to +5V), VELOCITY out (0 to +5V), TRIGGER out (~1ms +5V pulse) — three synced CV/trigger rows for any eurorack voice.
Listen for DFAM still plays internally, but its patchbay also sequences your external voice in lockstep — two independent step-CV rows plus a clock.
▸ Show diagram
Patch diagramPatch diagram with 4 modules and 3 connections. Modules: DFAM, Filter, VCA, Envelope. Signals: 2 cv, 1 trigger.DFAMFilterVCAEnvelopeSEQ PITCH MOD: OFFPITCHcvVELOCITYcvTRIGGERtrigCutoffcvCVcvTrigtrigcvtrigger
FM Toys metallic hits
Linear FM from VCO 1 into VCO 2, with the sequencer driving only VCO 2, gives bell-like harmonics that shift per step.
Walkthrough
  1. Set HARD SYNC switch to OFF (FM is most audible with sync off).
  2. Turn 1→2 FM AMOUNT to ~2 o'clock.
  3. Set VCO 1 WAVE to triangle and VCO 2 WAVE to square.
  4. Turn VCO 1 LEVEL and VCO 2 LEVEL each to ~1 o'clock.
  5. Set SEQ PITCH MOD switch to VCO 2 so only VCO 2 tracks the sequencer.
  6. Tune PITCH 1-8 knobs for a sequence of metallic harmonics.
  7. Optional: patch DFAM VCO 2 out → DFAM VCF MOD for audio-rate filter FM (see preset FM Toys, manual p. 34).
  8. Press RUN/STOP; tweak VCO 2 FREQUENCY to sweep timbre without changing the bass note.
  9. Patch VCA out → mixer.
Signal out VCA out — percussive bell/clang hits whose timbre shifts per step.
Listen for VCO 1 holds a steady fundamental; VCO 2 jumps around above it with FM sidebands, giving DX-style bells and aggressive metallic clangs that change per step.
▸ Show diagram
Patch diagramPatch diagram with 1 module and 1 connection. Modules: DFAM. Signals: 1 cv.DFAMHARD SYNC: OFF1→2 FM AMOUNT: 2 o'clockSEQ PITCH MOD: VCO 2VCF MODcvVCO 2cv11. filter FM at audio ratecv
Sequencer as audio oscillator
Feed an audio-rate VCO into TEMPO input so the sequencer runs at audio rate and PITCH out becomes an 8-sample wavetable.
Walkthrough
  1. Turn VCO 1 LEVEL, VCO 2 LEVEL, and NOISE/EXT LEVEL to 0 (silence the internal voice).
  2. Set SEQ PITCH MOD switch to OFF.
  3. Patch an external VCO (saw/triangle, audio rate) → DFAM TEMPO input.
  4. Press RUN/STOP on DFAM — the sequencer is now clocking at audio rate.
  5. Patch DFAM PITCH out → external filter or VCA input (this is your audio signal now).
  6. Turn DFAM TEMPO knob to shift the fundamental (summed with the incoming CV).
  7. Dial PITCH 1-8 knobs — each knob sets one sample of the 8-step waveform.
Signal out DFAM PITCH out — audio-rate stepped waveform (-5V to +5V), send through a VCA/filter for proper levels.
Listen for The sequencer becomes an oscillator. PITCH 1-8 are the 8 sample values of a wavetable; tweaking a knob changes one slice of the timbre without changing pitch.
▸ Show diagram
Patch diagramPatch diagram with 3 modules and 2 connections. Modules: DFAM, VCO, Filter. Signals: 2 audio.DFAMVCOFilterVCO 1/2 LEVEL: 0 · Noise: 0 · SEQ PITCH MOD: OFFTEMPOaudioPITCHaudioOutaudioInaudio121. audio-rate clock2. 8-step wavetable outaudio
Velocity-driven accent from Mother-32
Mother-32 ASSIGN configured to MIDI Velocity drives DFAM's VELOCITY input so MIDI dynamics scale all three envelopes.
Walkthrough
  1. On Mother-32, set the ASSIGN output to MIDI Velocity (see Mother-32 manual Setup).
  2. Patch Mother-32 ASSIGN out → DFAM VELOCITY input — this overrides the sequencer VELOCITY 1-8 knobs.
  3. Provide DFAM's clock from a second source (e.g. Mother-32 GATE out or another clock) → DFAM ADV/CLOCK.
  4. Press RUN/STOP on DFAM.
  5. Play Mother-32 via MIDI with varying velocities.
  6. Patch DFAM VCA out → mixer.
Signal out VCA out — DFAM voice whose amplitude and decay scale with incoming MIDI velocity voltage.
Listen for Soft MIDI notes make DFAM hits quiet and short; hard notes punch loud with longer tails. All three envelopes (VCO/VCF/VCA) scale together.
▸ Show diagram
Patch diagramPatch diagram with 2 modules and 2 connections. Modules: Mother-32, DFAM. Signals: 1 cv, 1 clock.Mother-32DFAMASSIGN: MIDI VelocitySequencer running: GATEclkASSIGNcvADV/CLOCKclkVELOCITYcv11. velocity-scaled hitscvclock
Quick hats — decay-modulated
Noise-only voice through the HP filter, with PITCH out modulating VCA DECAY so each step has its own tail length.
Walkthrough
  1. Turn VCO 1 LEVEL and VCO 2 LEVEL to 0; turn NOISE/EXT LEVEL fully CW.
  2. Set VCF switch to HP; CUTOFF to ~3 o'clock; RESONANCE to ~10 o'clock.
  3. Set VCA EG switch to FAST; set VCA DECAY to noon (widest CV response per manual).
  4. Set SEQ PITCH MOD switch to OFF so PITCH 1-8 does not change the VCOs.
  5. Patch DFAM PITCH out → DFAM VCA DECAY input.
  6. Tune PITCH 1-8 knobs — low knob = short closed hat, high knob = long open hat.
  7. Press RUN/STOP.
  8. Patch VCA out → mixer.
Signal out VCA out — filtered noise hats whose decay length changes per step.
Listen for A classic hi-hat line where PITCH 1-8 knobs control tightness rather than pitch. Two knobs high and the rest low gives you closed-closed-open-closed patterns.
▸ Show diagram
Patch diagramPatch diagram with 1 module and 1 connection. Modules: DFAM. Signals: 1 cv.DFAMSEQ PITCH MOD: OFFVCO 1/2 LEVEL: 0 · NOISE: fullVCF: HP · CUTOFF: ~3 o'clockVCA DECAY: noon · VCA EG: FASTVCA DECAYcvPITCHcv11. decay varies per stepcv
Talking drum
VCO 2 audio-rate FMs the filter via VCF MOD, producing formant-like vocal timbres on each hit.
Walkthrough
  1. Set HARD SYNC switch to OFF; turn 1→2 FM AMOUNT fully CCW.
  2. Turn NOISE/EXT LEVEL to 0; turn NOISE/VCF MOD knob fully CW.
  3. Set VCF switch to LP; CUTOFF to ~12 o'clock; RESONANCE low (~9 o'clock) for thump.
  4. Set SEQ PITCH MOD switch to VCO 2 — sequencer changes VCO 2's frequency only.
  5. Set VCO 1 LEVEL to ~1 o'clock (the fundamental); VCO 2 LEVEL to 0 (used only as mod source).
  6. Patch DFAM VCO 2 out → DFAM VCF MOD input.
  7. Press RUN/STOP and tune PITCH 1-8 knobs for different vowel shapes.
  8. Patch VCA out → mixer.
Signal out VCA out — low drum tone shaped by a vocal-like filter formant each hit.
Listen for Each step hits a low drum, but the filter shouts a different vowel — 'bow-wow-wah' textures driven by VCO 2's sequenced pitch modulating cutoff at audio rate.
▸ Show diagram
Patch diagramPatch diagram with 1 module and 1 connection. Modules: DFAM. Signals: 1 cv.DFAMHARD SYNC: OFFNOISE/EXT LEVEL: 0 · NOISE/VCF MOD: full CWVCF: LP · RESONANCE: lowSEQ PITCH MOD: VCO 2VCF MODcvVCO 2cvcv
External source through DFAM VCA
External audio replaces noise at the mixer, and DFAM's sequencer chops it rhythmically via the VCA envelope.
Walkthrough
  1. Patch external audio (synth pad, drum loop, reverb tail) → DFAM EXT AUDIO input. Signal must be ~10V p-p (eurorack level).
  2. Turn VCO 1 LEVEL and VCO 2 LEVEL to 0.
  3. Turn NOISE/EXT LEVEL fully CW for maximum external-signal gain.
  4. Set VCF switch to LP; turn CUTOFF fully CW (filter wide open).
  5. Set VCA EG switch to FAST; set VCA DECAY to taste (short for chops, long for swells).
  6. Tune VELOCITY 1-8 knobs for per-step gain (0 = silent step).
  7. Press RUN/STOP.
  8. Patch DFAM VCA out → mixer.
Signal out VCA out — external source gated by DFAM's 8-step VCA envelope, per-step volume set by VELOCITY knobs.
Listen for The external track is sliced into 8 rhythmic chunks at DFAM's tempo. VELOCITY knobs set how loud each slice is; silent steps mute the source entirely.
▸ Show diagram
Patch diagramPatch diagram with 3 modules and 2 connections. Modules: DFAM, External FX, Output. Signals: 2 audio.DFAMExternal FXOutputVCO 1/2 LEVEL: 0NOISE/EXT LEVEL: fullVCF: LP · CUTOFF: full CWVCA EG: FAST · VCA DECAY: tuned to tempoEXT AUDIOaudioVCAaudioOutaudioInaudio11. rhythmically gated external signalaudio

Behaviors

Semi-modular normalization no patching

Default signal path: two VCOs and noise → mixer → VCF → VCA → OUT. Sequencer clock is normalized to TRIGGER input (fires all three EGs); VELOCITY 1-8 normalized to VELOCITY input; noise normalized to the mixer. Any patched cable replaces its normalization.

Three velocity-scaled envelopes every step

VCO, VCF and VCA each have their own decay envelope. All three share one velocity input — per-step VELOCITY knobs set amplitude of all three simultaneously, and also subtly affect their decay time. Velocity=0 silences the step entirely.

Bipolar EG amounts VCO/VCF EG AMOUNT knobs

EG AMOUNT knobs are bipolar around noon. CW produces standard rising envelopes (pitch jumps up, filter opens); CCW produces inverted envelopes (pitch dips, filter closes into each note). Negative pitch gives videogame-style bloops; negative VCF gives inverted drums.

SEQ PITCH MOD routing switch position

VCO 1 & 2: sequencer pitch controls both oscillators (sequenced bass lines). VCO 2: only oscillator 2 — useful with HARD SYNC or FM so VCO 1 holds static pitch while VCO 2 gets sequenced modulation. OFF: PITCH CV still appears on the patchbay, usable as a generic 8-step CV sequencer.

Patchbay as CV sequencer SEQ PITCH MOD OFF · patch PITCH / VELOCITY / TRIGGER outputs

With SEQ PITCH MOD OFF, DFAM doubles as a step-CV sequencer: PITCH out, VELOCITY out and TRIGGER out can modulate another module (e.g., VCA CV, decay time, external filter cutoff). Gives two independent bipolar/unipolar CV rows per step plus a clock.

Clock VCO is the tempo TEMPO knob or TEMPO CV jack

The sequencer clock is itself a voltage-controlled oscillator (1V/oct on TEMPO input). This enables audio-rate clocking — the sequencer becomes an 8-step waveform generator. PITCH out then becomes an oscillator with per-sample amplitudes set by the 8 pitch knobs.

External clock override patch into ADV / CLOCK

TEMPO knob is ignored whenever ADV/CLOCK receives a rising edge. Use Mother-32 ASSIGN (Clock) or another DFAM's TRIGGER out to slave DFAM. Slowly-changing voltages without sharp edges may not trigger — accents from Mother-32 need fast rise to register.

Hard-sync voice character HARD SYNC ON

VCO 2 phase locks to VCO 1. VCO 2 FREQUENCY becomes a timbre control rather than a pitch control — useful for sweeping metallic harmonics while bass pitch stays fixed. VCO 2 goes silent if set below VCO 1 frequency, especially on square wave.

Filter self-oscillation RESONANCE >3 o'clock

In LP mode the VCF self-oscillates into a sine tone, usable as a third sound source (see 'Filter as Oscillator' preset). In HP mode the resonance scales differently — self-oscillation begins around CUTOFF ~1kHz with RESONANCE at max.

Dual-function NOISE/VCF MOD VCF MOD jack

NOISE/VCF MOD knob controls how much noise modulates cutoff (dirt/lo-fi). Patching VCF MOD replaces noise as the modulation source, and the knob now attenuates that external CV — so the knob must be CW for full CV depth.

Sync multiple DFAMs TRIGGER → ADV/CLOCK of secondary

Primary DFAM TRIGGER out → secondary DFAM ADV/CLOCK input. Start the secondary first (so it is ready), then start the primary. Chain more DFAMs the same way. Drives polyrhythmic patterns when primary tempo is varied independently.

Eurorack installation 60HP eurorack case

Front panel unscrews from the wooden enclosure. Internal 10-pin header accepts standard Eurorack power ribbon. Uses +12V only (230mA max), no −12V. No power switch — unit is on when powered.

Controls

VCO 1 VCO 1 FREQUENCY Coarse pitch of oscillator 1.
~10 octave range · center = reference · summed with VCO 1 CV, VCO EG and sequencer pitch
VCO 2 VCO 2 FREQUENCY Coarse pitch of oscillator 2.
~10 octave range · affected by HARD SYNC and 1→2 FM AMOUNT
VCO 1 VCO 1 WAVE Waveform select.
UP: SQUARE · DOWN: TRIANGLE
VCO 2 VCO 2 WAVE Waveform select.
UP: SQUARE · DOWN: TRIANGLE
VCO 1 VCO 1 EG AMOUNT Depth of VCO envelope on VCO 1 pitch. Bipolar.
Noon = 0 · CW = positive sweep · CCW = negative sweep
VCO 2 VCO 2 EG AMOUNT Depth of VCO envelope on VCO 2 pitch. Bipolar.
Noon = 0 · CW/CCW = ± pitch sweep
VCO Envelope VCO DECAY Decay time of the envelope modulating both VCO pitches.
Audio-rate to several seconds · no effect if both VCO EG AMOUNT knobs at noon
VCOs SEQ PITCH MOD Three-way switch routes sequencer PITCH 1-8 knobs.
UP: VCO 1 & 2 · CENTER: OFF (PITCH CV still on patchbay) · DOWN: VCO 2 only
VCO 2 HARD SYNC Forces VCO 2 phase to reset to VCO 1. Creates metallic, flange-like timbres.
ON: sync engaged · VCO 2 may go silent if its frequency falls below VCO 1, especially on square
VCO Interaction 1→2 FM AMOUNT Linear FM amount from VCO 1 into VCO 2. Most audible with HARD SYNC OFF.
Summed with 1→2 FM AMT jack · clangorous to bell-like
Mixer VCO 1 LEVEL Amount of VCO 1 into the filter input.
Square sounds louder than triangle
Mixer VCO 2 LEVEL Amount of VCO 2 into the filter input.
Square sounds louder than triangle
Mixer NOISE / EXT LEVEL Amount of white noise (or EXT AUDIO jack signal) into the filter.
Modulated by NOISE LEVEL CV input · EXT AUDIO replaces noise when patched
VCF CUTOFF Filter cutoff frequency, LP or HP.
20Hz – 20kHz · summed with VCF EG, VCF MOD and NOISE/VCF MOD
VCF RESONANCE Feedback. Self-oscillates past ~3 o'clock in LP mode.
LP: sine self-oscillation · HP: self-oscillates with CUTOFF ~1kHz, scaling differs
VCF VCF Filter mode switch.
UP: HP (24dB/oct) · DOWN: LP (24dB/oct ladder)
VCF Envelope VCF DECAY Decay time of the envelope modulating filter cutoff.
~10ms to ~10s · no effect if VCF EG AMOUNT at noon
VCF Envelope VCF EG AMOUNT Depth of filter envelope. Bipolar.
Noon = 0 · CW = + · CCW = − · overrides VCF switch direction
VCF Modulation NOISE / VCF MOD Dual-purpose: noise modulates cutoff, OR attenuates external VCF MOD input when patched.
CW adds dirt/lo-fi · patched VCF MOD replaces noise as the source
VCA Envelope VCA EG Attack-time switch for VCA envelope.
FAST: 1ms (punchy) · SLOW: 100ms (soft)
VCA Envelope VCA DECAY Decay time of output VCA envelope.
Short = tight hat · long = washed/drone · velocity scales amplitude and decay
Output VOLUME Master output level.
Affects AUDIO OUT and VCA patch jack
Sequencer TEMPO Sequencer clock speed. Continuously variable across a very wide range.
~0.7Hz – 700Hz per step (≈10 BPM – 10,000 BPM at 16ths) · overridden by ADV/CLOCK when patched
Sequencer PITCH 1-8 Per-step pitch knobs. Bipolar around the VCO FREQUENCY reference.
Roughly ±5V (~10 octave range) · routed per SEQ PITCH MOD switch · always present at PITCH output
Sequencer VELOCITY 1-8 Per-step velocity. Drives all three envelopes' amplitude and slightly their decay time.
0–5V · VELOCITY knob at 0 = silent step · normalized to VELOCITY jack
Sequencer RUN/STOP Starts/stops sequencer from current step.
Red LED lit when running
Sequencer ADVANCE Manually steps the sequencer without triggering the envelopes.
Useful for fine-tuning individual steps while stopped
Sequencer TRIGGER Fires all three envelopes at current step without advancing.
Lets a step be auditioned and adjusted repeatedly

I/O

IN · 15

  • TRIGGER 0 to +5V pulse · +10V tolerant GATE
    Fires all three EGs at current step velocity without advancing the sequencer.
    NORM → sequencer clock
  • VCA CV 0 to +8V CV
    Direct CV into output VCA. Sums with internal VCA EG.
  • VELOCITY 0 to +5V
    Replaces sequencer velocity — drives all three EG amplitudes.
    NORM → sequencer VELOCITY 1-8 knobs
  • VCA DECAY −5V to +5V · set knob to noon for widest response CV
    CV sums with VCA DECAY knob.
  • EXT AUDIO 10V p-p Eurorack level AUDIO
    External audio source replaces noise at the mixer.
    NORM → internal noise generator
  • VCF DECAY −5V to +5V CV
    CV sums with VCF DECAY knob.
  • NOISE LEVEL 0 to +8V · can clip the noise VCA CV
    CV modulates NOISE/EXT LEVEL knob position.
  • VCO DECAY −5V to +5V CV
    CV sums with VCO DECAY knob.
  • VCF MOD −5V to +5V · NOISE/VCF MOD knob attenuates CV
    Hard-wired CV modulation source for VCF cutoff. Replaces noise in the NOISE/VCF MOD circuit.
  • VCO 1 CV −5V to +5V · set FREQ and EG AMOUNT to noon for accurate tracking CV
    1V/oct input for VCO 1.
  • 1→2 FM AMT 0 to +8V CV
    CV modulates 1→2 FM AMOUNT knob.
  • VCO 2 CV −5V to +5V · set FREQ and EG AMOUNT to noon for accurate tracking CV
    1V/oct input for VCO 2.
  • TEMPO −5V to +5V · summed with TEMPO knob CLK
    1V/oct input to the internal clock VCO. Extends tempo into audio rate.
  • RUN/STOP 0 to +5V gate · +10V tolerant GATE
    Gate controls sequencer run state.
  • ADV / CLOCK 0 to +5V · +10V tolerant · slow-changing CVs may be missed CLK
    External clock advance. TEMPO knob is ignored while patched. Each rising edge advances one step.

OUT · 9

  • VCA ±5V at typical Eurorack levels AUDIO
    Main audio output, post VOLUME.
  • VCA EG 0 to +8V ENV
    Copy of internal VCA envelope. Informed by velocity, VCA DECAY, VCA EG switch.
  • VCF EG 0 to +8V ENV
    Copy of internal VCF envelope. Informed by velocity and VCF DECAY.
  • VCO EG 0 to +8V ENV
    Copy of internal VCO envelope. Informed by velocity and VCO DECAY.
  • VCO 1 ±5V (10V p-p) AUDIO
    Direct VCO 1 output.
  • VCO 2 ±5V (10V p-p) AUDIO
    Direct VCO 2 output.
  • TRIGGER 0 to +5V · ~1ms width GATE
    ~1ms pulse from sequencer clock. Per step, used to clock another DFAM or a drum voice.
  • VELOCITY 0 to +5V CV
    Current step velocity as CV. Follows whichever step the sequencer is on.
  • PITCH −5V to +5V
    Current step pitch knob voltage. Always available even when SEQ PITCH MOD is OFF.