How to Use Virtual MIDI Ports in MIDIHub

Virtual MIDI ports connect Android music apps together. MIDIHub provides 6 virtual inputs and 6 virtual outputs that act as bridges between apps.

• Virtual Outputs → appear as inputs in other apps
• Virtual Inputs → receive MIDI from other apps

Quick Setup

Example: Connect a sequencer to a synth

1. Sequencer app: Set MIDI Output to “MIDIHub Virtual 1”
2. MIDIHub: Swipe from Virtual Input 1 to Virtual Output 2
3. Synth app: Set MIDI Input to “MIDIHub Virtual 2”

Common Uses

• Control multiple synths: Controller app → Virtual In 1 → Multiple Virtual Outs
• DAW with external apps: DAW → Virtual ports → Synth apps
• Add hardware support: App → Virtual In → USB/BLE Output

App Configuration

FL Studio Mobile

• Settings → MIDI → Select MIDIHub Virtual ports

Caustic 3

• Menu → Preferences → MIDI → MIDIHub Virtual

G-Stomper

• Setup → MIDI/OSC → Enable external MIDI

Koala Sampler

• Settings → MIDI → Select MIDIHub Virtual

Troubleshooting

App doesn’t show MIDIHub ports?

• Start MIDIHub first, then the app
• Some apps need “External MIDI” enabled

No MIDI flow?

• Check port numbers match
• Use MIDIHub’s log to verify

Connection drops?

• Disable battery optimization for MIDIHub
• Lock apps in memory

Tips

• Test one connection at a time
• Save working setups as presets
• Don’t create loops without filtering
• Only use the ports you need