OB-Xd (plugin) · Pixelquencer

Web MIDI page for the free OB-Xd synth plugin by discoDSP. Every slider uses OB-Xd 3's default MIDI CC map from its manual, so nothing needs learning. Send to a virtual MIDI port (IAC Driver on macOS, loopMIDI on Windows) and route it to the plugin in your DAW. Chrome or Edge · HTTPS or localhost.

Channel setup

Keyboard

Octave

Velocity 100

Random note

Click or drag keys to play. Computer keys: A S D F G H J K L ; (white) and W E T Y U O P (black). Last played note can fill a sequencer step.

Sequencer

Tempo

Steps

Gate 60%

Random 0%

Other pages Sync with other pages

Sync with other pages: starting.

Click a step to toggle rest / note. Shift-click or use “Set from keyboard” after playing a key.

Last message: none

Source: OB-Xd Virtual Synthesizer manual by discoDSP (https://www.discodsp.com/pdf/obxd.pdf, PDF of May 17, 2026, SHA-1 0f1ff9bd4ecc56bf6311e04c98766a1ada70540e), MIDI CC Map: "OB-Xd 3 has this default MIDI CC mapping"; vibrato depth on CC 1 from the Vibrato Rate paragraph. Applies to OB-Xd's Default MIDI board. Five rows the manual maps to CC 120 to 124 (envelope shapes, filter falloff, voice multiplication, level variation) are not sent: those numbers are MIDI channel mode messages. The manual prints no value ranges, so every slider spans 0 to 127. Panic sends Note Off, All Notes Off (123) and All Sound Off (120).