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Korg / Bass synthesizer

Korg volca bass

A three-oscillator bass synth with MIDI note input and a step sequencer. Check clock and message reception before changing your setup.

Manufacturer documented Korg volca bass hardware. References use the EFGSCJ4 manual’s English panel; other volca models can have different settings and note maps.
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Reference

Look up MIDI

Check MIDI settings and supported messages.

Troubleshoot

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Workflow

Connect gear

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At a glance

MIDI quick reference

MIDI input
MIDI IN for external MIDI control
Manufacturer documented
MIDI channel
Selectable channel 1–16
Manufacturer documented
Clock setting
Global parameter 6: Auto or Internal
Manufacturer documented
Message reception
Global parameter 7: MIDI RX ShortMessage On/Off
Manufacturer documented
Full MIDI reference
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Common problems

Manufacturer documented
volca bass won’t respond to MIDI notes
The internal sequence plays, but the external controller does not trigger sounds.Manufacturer documented
volca bass keeps its own tempo with MIDI clock
The volca’s sequence does not follow the tempo sent over MIDI IN.
Official resources

Manuals & resources

volca bass Owner’s Manual

Korg · EFGSCJ4 multilingual sheet, English panel · last checked 2026-10-03

References

Sources & review

Sources reviewed: . Documentation does not replace a physical hardware test.

Sections reviewed: English panel: MIDI IN; English panel: Specifying the MIDI channel; English panel: global parameter table; English panel: MIDI IN; Specifying the MIDI channel; global parameter 7; English panel: Specifying global parameter settings, parameters 6–7.