SP‑404MK II FX CTRL v1.0 Help

Hello

• This is a web‑MIDI FX controller for the Roland SP‑404 mk II.
• Randomize may spit out silence, feedback or ear/speaker‑killing levels. Always monitor quietly first – you have been warned.
• Best viewed in Chrome / Edge with SP‑404 mk II OS 5.0 (works on 4.x too).

1. MIDI

• Connect the SP‑404 mk II via USB.
• Click Connect MIDI  »  choose the SP‑404 mk II for both I/O ports.
• Ensure the mkII is in MIDI mode B, Pad Channels are 1/2 and we're sending clock out.
• All CC changes are sent to – and received from – the hardware in real‑time.

2. Bus FX

• On / Off toggle – click the bus‑button or press 1‑5 to pause/start MIDI CC output.
• Bypass – ⌘/Ctrl + click the bus or hit QWERT. Clicking again restores the previously selected FX.
• FX Type – select from the drop‑down.
• Parameters – up to six sliders / toggles per FX.
• “Control All” batch edit – hold ⌘/Ctrl while dragging parameter.
• Swap compatible FX between buses – drag the small handle at the bottom of a column onto another column.
• Shift + click a bus‑button → randomise upto six parameters on that bus.

3. Morph

• Morph On / Off – click the Morph button or press 8.
• Shift + click header → randomise 4 Morph corners. ⌘/Ctrl + click → reset Morph corners.
• Pad Joystick – click‑drag inside the square to morph between four corners (disabled if Morph Off or the LFO is On).
• Corner buttons 1‑4 • Click = capture current bus parameter snapshot to that corner. • Shift + click = clear corner. • Drag one button onto another to swap their snapshots.
• Edit modulated params – turn Morph Off, then tweak; Shift + click a knob/slider to remove it from Morph modulation.

4. LFO

• LFO On / Off – click the header or press 9. ⌘/Ctrl + click resets every LFO control to its default.
• Mode – Free (rate sliders) or Sync (MIDI‑clock divisions).
• Shape – sine, triangle, square, saw, ramp, noise.
• Rate / Division X·Y, Depth X·Y, Center X·Y – click a label to reset that field.
• Shift + click the header → randomise every LFO control.

5. Sidechain

• On / Off – press the Sidechain button or key 0.
• Shift + click header → randomise all SC controls. ⌘/Ctrl + click → reset to defaults.
• Learn Pad – click then hit any pad to set the trigger.
• DADSR – master T (Time) plus proportional D A D S R sliders.
• Curve & Gain – C & G : shape the contour and sensitivity.
• 6 Destinations – route the envelope to any FX parameter, LFO parameter or Morph X/Y directly or inverted.

6. Randomize

• Bus Matrix – include/preclude buses in %randomize/morph/sidechain.
• % FX Types – randomise the FX type on every bus.
• % Parameters – randomise all parameters on every bus.
• % All – randomise both FX types and parameters on every bus.
• Shift + click a bus-button → randomise just that bus.
• Shift + click Morph / LFO / Sidechain headers → randomise respective panels.

7. Presets

• Shift + click a slot → save / overwrite current system state.
• ⌘/Ctrl + click a slot → delete.
• Click an active slot → load Preset; click an empty slot → load a blank state.
• Drag & drop slots to reorder; the last‑loaded slot flashes yellow.
• Shift + click the Presets label → fill all empty slots with random patches.
• Export, Import all Presets and Clear All to reset all slots to empty.

8. Global Shortcuts

• ⌘/Ctrl + Z → Undo  |  ⇧ + ⌘/Ctrl + Z or Ctrl + Y → Redo.
• Hold ⌘/Ctrl while dragging any parameter → “Control All”.
• 12345 Bus MIDI out toggle, QWERT Toggle bus bypass.
• 8 Morph, 9 LFO, 0 Side‑chain – On/Off toggle.

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This software is provided “as is”, without warranty of any kind and is not affiliated with Roland Corporation.

No personal data is collected, stored or transmitted.