MIDI 1U

Intellijel 14HP
fw 1.2
MIDI I/O CLOCK GATE TRIGGER

Verified sheet

The facts on this sheet have been cross-checked against the sources below.

Sources
Suggest a correction

1U USB/DIN MIDI-to-CV interface for Intellijel cases. Converts MIDI pitch, velocity, mod, CC, gate, trigger, and clock to CV. Single or Dual synth mode. Expandable to 10 synths with CVx modules.

Patch Ideas · 4

Basic mono synth
PITCH → VCO, GATE → envelope, VEL → VCA for velocity dynamics.
Walkthrough
  1. Make sure MIDI is reaching the case (USB or DIN into the MIDI IN Jacks / 7U / Palette).
  2. Press LEARN once — the button glows solid blue.
  3. On your MIDI controller, play a note on the channel you want (e.g. Ch 1). LEARN turns off; Synth 1 is locked to that channel.
  4. Patch MIDI 1U PITCH → VCO 1V/oct input.
  5. Patch MIDI 1U GATE → envelope Trig/Gate in.
  6. Patch the envelope Out → VCA CV in.
  7. Patch MIDI 1U VEL → a second VCA CV in (or the same VCA's second CV) so loud notes get louder.
  8. Play the keyboard — each note should track pitch and open the envelope.
Signal out PITCH: ±5V 1V/oct · GATE: 0–5V while note held · VEL: 0–5V proportional to velocity.
Listen for A standard monosynth that tracks your keyboard and gets louder the harder you play.
▸ Show diagram
Patch diagramPatch diagram with 4 modules and 4 connections. Modules: MIDI 1U, VCO, Envelope, VCA. Signals: 2 cv, 1 pitch, 1 gate.MIDI 1UVCOEnvelopeVCAPITCH1v/octGATEgateVELcv1V/oct1v/octTriggateOutcvCVcv11. velocity-sensitive dynamicscvpitchgate
Dual synth layering
Dual Mode repurposes MOD/CC/TRIG as PITCH/VEL/GATE for Synth 2.
Walkthrough
  1. Long-press LEARN (>2 sec) — LEARN glows yellow, module is now in Dual Mode.
  2. Press LEARN once (it turns red), then play a note on your Synth 1 channel (e.g. Ch 1). LEARN returns to yellow.
  3. Double-press LEARN (it flashes red), then play a note on your Synth 2 channel (e.g. Ch 2). LEARN returns to yellow.
  4. Patch PITCH → VCO 1 (1V/oct) and GATE → Env 1 Trig for Synth 1.
  5. Patch MOD → VCO 2 (1V/oct) — this is now Synth 2's pitch.
  6. Patch TRIG → Env 2 Trig — this is now Synth 2's gate.
  7. Optionally patch VEL → VCA 1 CV and CC → VCA 2 CV (CC is Synth 2 velocity in Dual Mode).
  8. Play both channels from your DAW/controller — two independent mono voices.
Signal out PITCH & MOD: ±5V 1V/oct (Synth 1 & 2 pitch) · GATE & TRIG: 0–5V (Synth 1 & 2 gates).
Listen for Two separate monosynths respond to two MIDI channels — great for bass + lead, or layered unison with detuned VCOs.
▸ Show diagram
Patch diagramPatch diagram with 5 modules and 4 connections. Modules: MIDI 1U, VCO 1, Env 1, VCO 2, Env 2. Signals: 2 pitch, 2 gate.MIDI 1UVCO 1Env 1VCO 2Env 2Mode: Dual (long-press LEARN)PITCH1v/octGATEgateMOD1v/octTRIGgate1V/oct1v/octTriggate1V/oct1v/octTriggate121. Synth 2 pitch in Dual Mode2. Synth 2 gate in Dual Modepitchgate
MIDI clock to sequencer
CLK at /24 = quarter notes; RST resets the sequencer on MIDI Start/Reset.
Walkthrough
  1. Start MIDI clock from your DAW or hardware sequencer into the case's MIDI IN.
  2. Press CLK÷ repeatedly until the LED blinks at quarter-note speed — this is the /24 setting.
  3. Patch MIDI 1U CLK → your sequencer's Clock In.
  4. Patch MIDI 1U RST → your sequencer's Reset input (RST outputs a trigger on MIDI Start/Reset by default).
  5. Press Play in your DAW — the sequencer should snap to beat 1 and advance one step per quarter note.
  6. If you want half notes or 16ths, press CLK÷ again to cycle (/48 = half, /6 = 16th, /12 = 8th, etc.).
Signal out CLK: 0–5V gate pulses at the selected division · RST: 0–5V trigger on MIDI Start/Reset.
Listen for External sequencers lock to your DAW's tempo and restart cleanly on every play.
▸ Show diagram
Patch diagramPatch diagram with 2 modules and 2 connections. Modules: MIDI 1U, Sequencer. Signals: 1 trigger, 1 clock.MIDI 1USequencerCLK÷: /24 (quarter notes)CLKclkRSTtrigClock InclkResettrigtriggerclock
Mod wheel filter sweep
Assign MOD jack to mod wheel (CC 1) and send it to filter cutoff.
Walkthrough
  1. Set up a basic mono patch first: PITCH → VCO, GATE → envelope → VCA.
  2. Press LEARN twice — the button flashes blue (LEARN MOD+CH mode).
  3. On your controller, move the mod wheel on the channel you want (e.g. Ch 1). LEARN turns off; MOD jack is now assigned to CC 1.
  4. Patch MIDI 1U MOD → filter cutoff CV input.
  5. Set the filter cutoff manually to a fairly closed position so there's room to open up.
  6. Play and push the mod wheel up — cutoff opens. Pull it down — cutoff closes.
Signal out MOD: 0–5V unipolar (default) proportional to mod wheel position.
Listen for Hands-on filter sweep from the mod wheel while you play — classic expressive mono-synth performance.
▸ Show diagram
Patch diagramPatch diagram with 4 modules and 3 connections. Modules: MIDI 1U, VCO, Envelope, Filter. Signals: 1 cv, 1 pitch, 1 gate.MIDI 1UVCOEnvelopeFilterLEARN: MOD+CH (flashing blue, move mod wheel)PITCH1v/octGATEgateMODcv1V/oct1v/octTriggateCutoffcv11. mod wheel sweeps filtercvpitchgate

Behaviors

Single Mode default / LEARN unlit

Controls one monophonic synth on a user-selected MIDI channel. Outputs PITCH, VEL, MOD, CC, GATE, TRIG, CLK, RST. CC and MOD jacks assignable to any MIDI CC or aftertouch.

Dual Mode long-press LEARN > 2s

Controls two monophonic synths on separate MIDI channels. PITCH/VEL/GATE = Synth 1; MOD/CC/TRIG repurposed as PITCH/VEL/GATE for Synth 2. LEARN button glows yellow in Dual Mode.

MIDI Channel Learning LEARN button (single press, solid blue)

Module awaits any incoming MIDI message and locks to that channel, also assigning the CC jack to that CC number. Settings auto-saved after 2 seconds of MIDI inactivity.

Portamento MIDI CC 65 on / CC 5 for time

Pitch output slews when portamento is enabled via standard MIDI CC messages. Time set by CC 5.

CVx Expansion CVx 1U module connected via I2C

Up to 4 CVx expanders add 8 assignable outputs each (32 total extra jacks), enabling polyphonic, drum, and multi-channel operation up to 10 synths on 10 MIDI channels.

Controls

Global LEARN Button Cycles through three states to learn MIDI channel and CC/MOD jack assignments.
Off = normal · Solid blue = LEARN CC+CH · Flashing blue = LEARN MOD+CH · long-press = toggle Dual Mode
Global CLK÷ Button Sets MIDI clock division for the CLK output jack. In LEARN mode, toggles CC/MOD jack CV polarity (unipolar/bipolar).
/1 (24ppq) · /3 (32nd) · /6 (16th) · /12 (8th) · /24 (quarter) · /48 (half) · /96 (whole) · LED blinks with division

I/O

OUT · 8

  • PITCH ±5V (1V/oct) CV
    1V/oct CV pitch output for Synth 1. Note 0 (C-2) = -5V, Note 120 (C8) = +5V.
  • MOD 0–5V unipolar or ±5V bipolar CV
    In Single mode: MIDI CC or aftertouch CV for Synth 1. In Dual mode: Pitch for Synth 2.
  • GATE 0–5V GATE
    Gate output for Synth 1. High when note is held.
  • CLK 0–5V gate GATE
    Divided MIDI clock output. Division set by CLK÷ button.
  • VEL 0–5V CV
    Velocity CV output for Synth 1, proportional to MIDI velocity.
  • CC 0–5V unipolar or ±5V bipolar CV
    In Single mode: assignable MIDI CC CV output. In Dual mode: Velocity for Synth 2.
  • TRIG 0–5V trigger GATE
    In Single mode: note trigger output for Synth 1. In Dual mode: Gate for Synth 2.
  • RST 0–5V GATE
    RESET output (trigger on MIDI reset) or RUN output (gate high while clock running), configurable in Intellijel Config app.

Expanders

CVx 14HP

1U expander for Intellijel MIDI 1U. Adds 8 fully assignable CV/gate outputs via I2C. Chain up to four CVx for 32 outs and 8 extra synths (mono, poly, or drum). Jacks configured in Intellijel Config app.

Behaviors

Adds 8 MIDI synths I2C link to MIDI 1U

Connecting one CVx raises MIDI 1U's synth count from 2 to 10. Synths 3–10 can be configured as monophonic, polyphonic, or drum (note-mapped).

Polyphonic MIDI-to-CV MIDI note-on on a Poly synth channel

When multiple outs on the same CVx (or chained CVx) are assigned to the same Poly synth, voices are allocated across those outs — up to 8-voice polyphony with per-voice Pitch/Gate/Velocity.

Drum-note mapping MIDI note number on a Drum synth channel

Each out on a Drum synth is bound to a specific MIDI note number and fires Gate, Trigger, or Velocity when that note arrives — for sample-kit trigger buses.

Free CC / clock routing MIDI CC, clock, start/stop on a mapped synth

Any out can be re-purposed as a CC CV (uni/bipolar, optional High-Res), Aftertouch CV, extra Clock (arbitrary division 1–192), Reset, or Run gate.

Patch Ideas · 5

★ 4-voice polyphonic MIDI synth
Assign Outs 1–4 as Pitch and Outs 5–8 as Gate of a single Poly synth to get 4-voice MIDI polyphony into four VCO voices.
Walkthrough
  1. In Intellijel Config, Synths column, set Synth 3: MIDI Channel = 1, Type = Polyphonic.
  2. Expander 1 column: Out 1×1 → Output Type = Pitch, Synth = 3.
  3. Repeat for Out 1×2, 1×3, 1×4 → all Pitch, Synth 3 (this gives 4 voices).
  4. Out 1×5 → Output Type = Gate, Synth = 3. Repeat for Out 1×6, 1×7, 1×8 (4 gates, one per voice).
  5. Patch Out 1 → VCO A 1V/oct, Out 2 → VCO B 1V/oct, Out 3 → VCO C, Out 4 → VCO D.
  6. Patch Out 5 → EG A trig, Out 6 → EG B trig, Out 7 → EG C, Out 8 → EG D (each EG drives its own VCA).
  7. Play a 4-note chord on MIDI channel 1 from your DAW or keyboard.
Signal out Outs 1–4 — four independent 1V/oct pitch CVs, each ±5V. Outs 5–8 — four gates, 0–5V.
Listen for A true 4-voice polyphonic patch: each key press lights up one voice (round-robin), chords sustain across all four VCOs with independent envelopes.
▸ Show diagram
Patch diagramPatch diagram with 9 modules and 8 connections. Signals: 4 pitch, 4 gate.CVxVCO AVCO BVCO CVCO DEG AEG BEG CEG DOut 1-4 = Pitch (Poly Synth 3) · Out 5-8 = Gate (Poly Synth 3): Out 11v/octOut 21v/octOut 31v/octOut 41v/octOut 5gateOut 6gateOut 7gateOut 8gateV/Oct1v/octV/Oct1v/octV/Oct1v/octV/Oct1v/octTriggateTriggateTriggateTriggate11. 4-voice MIDI polyphonypitchgate
★ Paraphonic chord with Gate (Any)
Four pitch outs share a single envelope via Gate (Any) on Out 5 — cheap paraphonic chords through one VCA.
Walkthrough
  1. Synths column: Synth 4 = Polyphonic on MIDI Channel 2.
  2. Expander column: Out 1×1 to Out 1×4 → Output Type = Pitch, Synth = 4.
  3. Out 1×5 → Output Type = Gate (Any), Synth = 4 (fires whenever ANY voice is held).
  4. Patch Out 1 → VCO 1, Out 2 → VCO 2, Out 3 → VCO 3, Out 4 → VCO 4 (all into a common mixer).
  5. Patch Out 5 → envelope trigger; envelope → single VCA CV on the mixed VCO sum.
  6. Send a chord on MIDI channel 2 — all four notes sound together through one envelope.
Signal out Out 5 — one master gate 0–5V that stays high while any voice is held.
Listen for A full chord opens and closes with one shared envelope shape (paraphonic). Cheaper on envelopes/VCAs than true poly but locked to a single amplitude shape.
▸ Show diagram
Patch diagramPatch diagram with 9 modules and 7 connections. Signals: 1 audio, 1 cv, 4 pitch, 1 gate.CVxVCO 1VCO 2VCO 3VCO 4VCO 1-4Mixer (In) -> VCAEGVCAOut 1-4 = Pitch (Poly Synth 4) · Out 5 = Gate (Any): Out 11v/octOut 21v/octOut 31v/octOut 41v/octOut 5gateV/Oct1v/octV/Oct1v/octV/Oct1v/octV/Oct1v/octOutaudioInaudioTriggateOutcvCVcv11. shared paraphonic envelopeaudiocvpitchgate
★ MIDI drum bus
Map 8 MIDI note numbers to 8 trigger outs for a drum rack driving individual sample modules.
Walkthrough
  1. Synths column: Synth 5 = Drum on MIDI Channel 10 (the GM drum channel).
  2. Expander: Out 1×1 → Output Type = Trigger, Synth = 5, MIDI Note = C1 (kick).
  3. Out 1×2 → Trigger, Synth 5, MIDI Note = D1 (snare).
  4. Out 1×3 → Trigger, Synth 5, MIDI Note = F#1 (closed hat). Repeat 1×4–1×8 for other drum notes.
  5. Patch each Out to its drum/sample module's trigger input (Out 1 → kick, Out 2 → snare, etc.).
  6. Play the mapped drum notes on channel 10 from a DAW drum track — each note fires its own jack.
Signal out Out 1–8 — eight 5V/5ms trigger pulses, each firing on its mapped MIDI note number.
Listen for A full MIDI drum rack in the modular: kick on C1, snare on D1, hat on F#1, etc. Velocity can be added by assigning another CVx out as Velocity on the same note.
▸ Show diagram
Patch diagramPatch diagram with 4 modules and 3 connections. Modules: CVx, Kick, Snare, Hat. Signals: 3 trigger.CVxKickSnareHatSynth 5 = Drum Ch10 · Out 1=Trig C1 · Out 2=Trig D1 · Out 3=Trig F#1 ... Out 8=Trig: Out 1trigOut 2trigOut 3trigTrigtrigTrigtrigTrigtrig11. per-note drum bustrigger
Mod wheel + aftertouch expression bus
Free up Outs 1–2 as two expressive CC CVs for filter and VCA colour, while keeping pitch/gate on the MIDI 1U.
Walkthrough
  1. Keep Synth 1 (MIDI 1U) as Monophonic on channel 1 — Pitch/Gate/Vel come off the MIDI 1U panel as usual.
  2. Expander: Out 1×1 → Output Type = CC, CC Number = 1 (Mod Wheel), Synth = 1, CV Polarity = Unipolar 0–5V.
  3. Out 1×2 → Output Type = Pressure (Aftertouch), Synth = 1.
  4. Patch MIDI 1U Pitch → VCO 1V/oct, MIDI 1U Gate → EG trig.
  5. Patch CVx Out 1 → VCF cutoff CV (mod wheel opens the filter).
  6. Patch CVx Out 2 → VCA CV or a second VCF input (aftertouch adds emphasis when you press keys harder).
  7. Play — mod wheel sweeps the filter, pressing harder on a controller with aftertouch adds colour.
Signal out Out 1 — mod wheel CV 0–5V into VCF. Out 2 — channel aftertouch CV 0–5V into VCA/VCF.
Listen for Expressive playing: mod wheel opens the filter, leaning into a key adds pressure-based modulation. Pitch and gate still come from MIDI 1U.
▸ Show diagram
Patch diagramPatch diagram with 6 modules and 4 connections. Modules: CVx, MIDI 1U, VCO, EG, VCF, VCA. Signals: 2 cv, 1 pitch, 1 gate.CVxMIDI 1UVCOEGVCFVCAOut 1 = CC1 Mod Wheel (Synth 1) · Out 2 = Aftertouch (Synth 1): Out 1cvOut 2cvPitch1v/octGategateV/Oct1v/octTriggateCutoffcvCVcv121. mod wheel sweep2. aftertouch swellcvpitchgate
Extra clocks at different divisions
Three CVx outs become three independently divided clocks for polymetric sequencer sync.
Walkthrough
  1. Expander: Out 1×1 → Output Type = Clock (Always), Clock Division = 24 (quarter notes).
  2. Out 1×2 → Clock (Always), Clock Division = 6 (16th notes).
  3. Out 1×3 → Clock (Always), Clock Division = 18 (dotted 8ths — useful for polymeter).
  4. Out 1×4 → Output Type = Reset (fires on MIDI Start).
  5. Patch Out 1 → Sequencer A clock; Out 2 → Sequencer B clock; Out 3 → Sequencer C clock.
  6. Patch Out 4 → all sequencers' Reset inputs (mult if needed).
  7. Start playback in your DAW.
Signal out Out 1 — 1/4 note clock, Out 2 — 1/16 note clock, Out 3 — dotted-8th clock (all 0–5V pulses). Out 4 — reset pulse on Start.
Listen for Three sequencers run in time with the DAW but at different rates, creating a polyrhythmic interplay that all restart together when you press play.
▸ Show diagram
Patch diagramPatch diagram with 5 modules and 4 connections. Modules: CVx, Seq A, Seq B, Seq C, Seq A/B/C. Signals: 1 trigger, 3 clock.CVxSeq ASeq BSeq CSeq A/B/COut 1 = Clock /24 · Out 2 = Clock /6 · Out 3 = Clock /18 · Out 4 = Reset: Out 1clkOut 2clkOut 3clkOut 4trigClockclkClockclkClockclkResettrig11. polymetric DAW synctriggerclock

I/O

OUT · 8

  • Out 1 0–5V or ±5V depending on assignment GATE
    User-assignable CV/gate output. Type and source synth set in Intellijel Config app.
  • Out 2 0–5V or ±5V depending on assignment GATE
    User-assignable CV/gate output.
  • Out 3 0–5V or ±5V depending on assignment GATE
    User-assignable CV/gate output.
  • Out 4 0–5V or ±5V depending on assignment GATE
    User-assignable CV/gate output.
  • Out 5 0–5V or ±5V depending on assignment GATE
    User-assignable CV/gate output.
  • Out 6 0–5V or ±5V depending on assignment GATE
    User-assignable CV/gate output.
  • Out 7 0–5V or ±5V depending on assignment GATE
    User-assignable CV/gate output.
  • Out 8 0–5V or ±5V depending on assignment GATE
    User-assignable CV/gate output.

Controls

Rear panel Expander ID DIP Two DIP switches on the back assign this CVx an ID from 1 to 4 when chaining multiple CVx units. Each CVx must have a unique ID.
SW1 down/SW2 down = Exp 1 · SW1 up/SW2 down = Exp 2 · SW1 down/SW2 up = Exp 3 · SW1 up/SW2 up = Exp 4
Intellijel Config app Output 1–8 assignment Each of the 8 output jacks is independently configured via the Intellijel Config app: Output Type, source Synth (1–10), CC #, and CV polarity.
Output Type: Pitch · Gate · Gate (Any) · Trigger · Velocity · Aftertouch · CC · CC High-Res · Clock (Always/Running) · Reset · Run