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PSU
Basic data
Name
Korg Volca Nubass
Category
5) Analog / semi-modular synthesizers
Type
BASS_SYNTHESIZER
Specimen
A
Inventory tag
HW-2024-SY-VNUBASS-001
Condition
OK
Physical parameters
Dimensions (mm)
—
Dimensions (inch)
—
Weight
—
Format
—
Material
—
Manufacturing (Period)
—
Manufacturer
—
Power
Voltage
6x AA battery or 9V DC (Korg KA-350)
Current (typical)
100 mA
Current (max)
150 mA
Polarity
centerpositive
Connector
DC 9V barrel (Korg Ka-350) + battery compartment
AC/DC
DC
Internal/External
Internal
Note
Supports power supply via Korg KA-350 (9V DC, center-positive); battery operation about 40 hours.
Warning: Check the polarity of the source before connecting! Improper power supply will damage the device.
Firmware and serial number
Serial number
Not stated
FW version (current)
Not stated
Check date
2026-03-03
Previous version
N/A
Bootloader
N/A
Update Link
—
Backup File
—
Quick Summary
Korg Volca Nubass (2019) is a hybrid bass synth combining subtractive and FM synthesis. It offers two oscillators where VCO 2 modulates VCO 1 for metallic bass, Ladder filter, 16-step sequencer and LFO. Ideal for experimental and electronic music.
Product Description
—
Features and functions
- Nubas sound engine - hybrid subtractive + FM synthesis
- Two analogous oscillators - VCO1 (bass) + VCO2 (modulation)
- FM modulation - VCO2 modulates pitch VCO1 - metallic / sci-fi bass
- Korg Lader Filter - 12dB / octave classical analog sound
- Resonance check - filter highlighting and break
- ADSR Envelope - amplitude and filtration dynamics
- LFO - modulation (0.15-20 Hz) - vivito, tremolo, sweet
- 16-step sequencer - creating bass pattern and grooves
- Temperature control - 40-200 BPM (internal or external sync)
- Sync IN / OUT - synchronization with other Volca units
- CV / Gate inputs - Eurorack compatibility (0-5V, 1V / octave)
- Audio outputs - LINE OUT (3.5 mm TS) + Headphones
- Battery + USB power supply - about 40 hours on AA batteries
- Compact design - 188 mm × 110 mm × 60 mm
- Built-in speaker - mobile monitoring
- Analytical sound - warm, rich bass without digital compression
- Flexible bass synthesis - from subtractive to FM experiments
- Ideal for - electronic music, bass lines, sound design, experiments
Primary I/O (quick orientation)
| Domain | Inputs | Outputs | Note |
|---|---|---|---|
| Audio | Audio IN (3.5mm TS) - ex. effects | Line OUT (3.5mm TS) + Headphones | Output impedance 1 kCalculation |
| Sync | Sync IN (3.5mm TS) | Sync OUT (3.5mm TS) | Synchronisation |
| CV/Gate | CV IN (3.5mm TS), Gate IN (3.5mm TS) | — | 0- 5V CV range |
Controls
FRONT / TOP (user control)
- 16-step sequencer
- Tempo knob
- VCO controls (subtractive synthesis)
- FM controls (frequency modulation)
- VCF controls (filter)
- Master volume
Service / hidden elements
- (None)
Connectors and connections
Connector matrix
| Interfaces | IN | OUT | Spec / note |
|---|---|---|---|
| Audio | Audio IN (3.5mm TS) - ex. effects | Line OUT (3.5mm TS) + Headphones | Output impedance 1 kCalculation |
| Sync | Sync IN (3.5mm TS) | Sync OUT (3.5mm TS) | Synchronisation |
| CV/Gate | CV IN (3.5mm TS), Gate IN (3.5mm TS) | — | 0- 5V CV range |
Latency and jitter
Clock sources
Internal, Sync IN, CV Gate
Clock IN/OUT format
BPM / Sync pulse / CV
Typical latency
< 5 ms
Jitter spec
< 100 ppm
Buffer support
N/A
Impedance and signal levels
Line Level (dBu)
-10 dBV
Mic In level
—
Output Impedance
1 kCalculation
Input Impedance
100 kΩ
THD
< 1%
Frequency Range
20 Hz — 20 kHz
Other Specifications (from metadata.specifications)
| Key | Value |
|---|---|
| specifications.synthesisis.type | Hybrid Subtractive + FM synthesis |
| specifications.synthesisis.oscillators | 2 |
| specifications.synthesisis.vco1 | Primary bass oscillator (Sawtooth / Square) |
| specifications.synthesisis.vco2 | Modulation oscillator (FM source into VCO1) |
| specifications.synthesisis.fm _ modulation | VCO2 modulates VCO1 pitch for FM effects |
| specifications.synthesisis.filter | Analog 12dB / octave Lowpass Ladder Filter |
| specifications.synthesisis.resonance | Adjust filter resonance |
| specifications.synthesisis.envelepe _ amp | ADSR for amplitude control |
| specifications.synthesisis.envelepe _ filter | ADSR for filter cutoff modulation |
| specifications.synthesisis.lfo.rate | 0.15 Hz - 20 Hz |
| specifications.synthesisis.lfo.waveforms | Multiple (triangle, square, sine) |
| specifications.synthesisis.lfo.destinations | Pitch, Amplitude, Filter |
| specifications.sequencer.steps | 16 |
| specifications.sequencer.tempo | 40-200 BPM |
| specifications.sequencer.resolution | 16th notes at current pace |
| specifications.sequencer.classes | Multiple classes (firmware dependent) |
| specifications.control.cv _ gate | Eurorack-compatible CV / Gate inputs (0-5V) |
| specifications.control.cv _ range | Eurorack 1V standard / octave pitch control |
Additional technical details
| Key | Value |
|---|---|
| No additional technical details | |
Typical routing
- FM bass: Bass with frequency modulation
• Set OSC Pitch
• Turn on FM modulation
• Edit FM debt a speed
• Sync with other Volca
Connection instructions: The examples below show typical signal flows in practice. For specific details (jitter, buffering), see section above.
SW / drivers
| Component | Windows | macOS | Linux | Note |
|---|---|---|---|---|
| No specific driver data; use the Documentation/Links section. | ||||
Custom firmware details
Author
—
FW family
—
Custom FW targets
- No explicit custom FW targets in metadata.
Custom CC mapping
| CC | Meaning |
|---|---|
| No custom CC mapping. | |
Custom FW global settings
| Settings | Meaning |
|---|---|
| No custom global settings. | |
Custom FW extended menu
| Item | Detail |
|---|---|
| No extended menu details. | |
Documentation and manuals
Manufacturer / Links
- Official site of manufacturer
- eBay - search Korg Volca Nubass
- Aukro.cz - search Korg Volca Nubass
- MusebnBazar.cz - search Korg Volca Nubass
- MIDI.cz - search for Korg Volca Nubass
- Kytary.cz - search for Korg Volca Nubass
- Heureka.cz - search Korg Volca Nubass
- Gear4music.cz - search Korg Volca Nubass
- Muziker.cz - search Korg Volca Nubass
Service log
| Date | Event | Who | Note |
|---|---|---|---|
| 2026-03-03 | Initial inventory | Studio tech | Added to inventory |
Presets / User banks
Storage type
—
Number of banks
8
Current bank
1
Backup File
Not stated
Export format
USB dump
Note
—
Notes / service / modifications
- Nubas is less well known, but quality bass synth with FM elements.