SP-404MK II FX CTRL v1.2 Help

Hello

This is a web-MIDI FX controller for the Roland SP-404 mk II.
Randomize can produce silence, feedback, or very hot levels—monitor quietly first.
Best viewed in Chrome / Edge on a desktop computer with SP-404 mk II OS 5.x (Works on 4.x too albeit without knob control)
On touch devices, landscape keeps the desktop-style layout and supports pinch zoom for closer access.

Connect the SP-404 mk II via USB to your device.
Click MIDI → choose the SP-404 mk II for both I/O ports.
Ensure the mk II is in MIDI Mode B, Pad Channels are 1/2, and clock out is enabled.
All parameter MIDI CCs are sent to—and received from—the hardware in real-time.
Panic! turns all FX and MIDI off.

Per-Bus Includes – the %, M, and E buttons above each bus include or exclude that bus from Randomize, Morph, and Envelope modulation.
Bus FX On/Off – click the yellow bus-button or press 1-5 to toggle FX bypass.
Bus MIDI On/Off – click the green bus-button or press Q-T to toggle MIDI output.
Bypass/FX On or Off – ⌘/Ctrl + click the bus button to bypass or restore the previous FX.
FX Type – select from the drop-down menu.
Parameters – up to six sliders or toggles per FX; hold ⌘/Ctrl while dragging to “Control All.”
Drag the “grab bar” at the bottom of any FX column to swap compatible FX between buses.

Click % FX Types, % Parameters, or % All to randomize selected buses.
The % button above each bus toggles whether that bus is affected.
Shift + click a bus yellow FX button → randomize up to six parameters on that bus (Morph must be inactive).
Shift + click the Morph, LFO, or Envelope green on/off button → randomize all module parameters.
Shift + click the Presets label → fill all empty slots with random patches.

Morph On/Off – click the Morph button or press 8.
Shift + click the Morph header → randomize all four Morph corners; ⌘/Ctrl + click → reset corners.
Click any of the four corner buttons to capture the current FX-parameter snapshot to that corner.
Shift + click a corner button → randomize that corner; ⌘/Ctrl + click → clear it.
Drag a corner button onto another to swap snapshots.
Drag the yellow circle (Pad Joystick) between corners to morph; disabled if Morph is Off or LFO is On.
To edit modulated parameters: turn Morph Off, tweak controls, then Shift + click a knob/slider to remove it from Morph modulation.

LFO On/Off – click the LFO header or press 9; ⌘/Ctrl + click resets all LFO controls.
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 to randomize every LFO control.

Envelope On/Off – click the Envelope button or press 0; Shift + click header → randomize all controls; ⌘/Ctrl + click → reset to defaults.
Click Learn then press a pad to assign the envelope trigger.
DADSR + T – T (Time) sets the overall envelope length; D, A, D, S, R then split that time into Delay, Attack, Decay, Sustain, and Release.
C + G – C (Curve) changes the bend/shape of the envelope; G (Gain) sets trigger sensitivity and overall envelope strength.
6 Destinations – route the envelope to any FX or LFO parameter or Morph X/Y (direct or inverted).

⌘/Ctrl + Z → Undo | ⇧ + ⌘/Ctrl + Z or Ctrl + Y → Redo.
1-5 → Bus FX On/Off; Q-T → Bus MIDI On/Off.
8 → Morph | 9 → LFO | 0 → Envelope.
Hold ⌘/Ctrl while moving a parameter slider to apply to all buses simultaneously.
On touchscreens, use the on-screen Shift and Cmd buttons beside the title for modifier gestures.

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.

Click anywhere to close.