Korg Volca Keys - Studio Hardware Inventory

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Basic data

Name

Korg Volca Keys

Physical parameters

Dimensions (mm)

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Dimensions (inch)

—

Weight

—

Format

—

Material

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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

Internal/External

Internal

Note

Supports power supply via Korg KA-350 (9V DC, center-positive); battery operation about 50 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

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Quick Summary

Compact polyphonic synth (2013) with 25 mini keys (2 octaves), three oscillators and a classic Korg Ladder filter. It offers 4-voice polyphony, ADSR envelope, LFO and delay effect. Ideal for melodic lines, targets and experimental sounds. Battery or USB powered.

Product Description

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Features and functions

25 mini-keys chromatic with range of C-C (2 octaves)
Polyphonia - 4 votes simultaneously for chords and layers
Three analogous VCO - combinable wave shapes (square, sawtooth, triangle)
Korg Lader Filter - classic 12dB / octave subtractive sound
ADSR Envelope - amplitude and filtration modulation
LFO - Pitch, Amplitude and Filter Modulation (0.15 Hz - 20 Hz)
Delay effect - creating space and echo effects (up to about 400 ms)
Battery + USB power supply - about 50 hours on AA batteries
Sync IN / OUT - synchronization with other Volca units
CV / Gate inputs - external control (sequencers, controllers)
Audio outputs - LINE OUT (3.5 mm TS) + Headphones
Compact design - 188 mm × 110 mm × 60 mm, light for transport
Analytical sound - pure analog without digital processing
Intuitive control - mini-faders for VCO mix, filter cutoff, env decay
Ideal for - melodic lines, keyboards, atmosphere, experimental sounds

Primary I/O (quick orientation)

Domain	Inputs	Outputs	Note
Audio	Audio IN (3.5mm TS)	Line OUT (3.5mm TS) + Headphones	Output impedance 1 kCalculation
Sync	Sync IN (3.5mm TS)	Sync OUT (3.5mm TS)	Synchronization with other Volca

Controls

FRONT / TOP (user control)

25 mini-keys (C-C)
VCO controls (volume, coat / fine pitch)
VCF controls (cutoff, resonance)
Delay controls (time, delay)
Master volume, headphone level

Service / hidden elements

(None)

Connectors and connections

Connector matrix

Interfaces	IN	OUT	Spec / note
Audio	Audio IN (3.5mm TS)	Line OUT (3.5mm TS) + Headphones	Output impedance 1 kCalculation
Sync	Sync IN (3.5mm TS)	Sync OUT (3.5mm TS)	Synchronization with other Volca

Latency and jitter

Clock sources

Internal, Sync IN, Keyboard

Clock IN/OUT format

Sync pulse

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.keyboard.keys	25
specifications.keyboard.type	Mini keys (velocity-sensitive in some revisions)
specifications.keyboard.range	3.5 octaves (A0 - C5)
specifications.keyboard.layout	Chromatic mini keyboard
specifications.synthesisis.oscillators	3
specifications.synthesisis.type	VCO Analog (Voltage Controlled Oscillators)
specifications.synthesisis.waveforms	Square, Sawtooth, Triangle (selective per VCO)
specifications.synthesisis.polyphons	4
specifications.synthesisis.filter	Analog 12dB / octave Lader Lowpass Filter (Korg classic)
specifications.synthesisis.envelepe _ amp	ADSR for amplitude control
specifications.synthesisis.envelepe _ filter	ADSR for filter modulation
specifications.synthesisis.lfo.rate	0.15 Hz - 20 Hz
specifications.synthesisis.lfo.waveforms	Square, Sawtooth, Triangle, Sin
specifications.synthesisis.lfo.destinations	Pitch, Amplitude, Filter
specifications.synthesisis.effects.delay	Analog delay effect with feedback control
specifications.synthesisis.effects.delay _ time	Up to ~ 400 ms
specifications.sequencer.steps	16
specifications.sequencer.classes	Multiple classes can be stored (firmware dependent)
specifications.sequencer.tempo	40-300 BPM
specifications.sequencer.features	Real-time recording, playback

Additional technical details

Key	Value
No additional technical details

Typical routing

Polyphonic melodies: Play melodies with polyphonies
• Play on mini keyboard
• Hold multiple keys for chords (4-vote)
• Edit filter cutoff in real time
• Delay on as needed

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

Service log

Date	Event	Who	Note
2026-03-03	Initial inventory	Studio tech	Added to inventory

Presets / User banks

Storage type

—

Number of banks

1 editable patch

Current bank

N/A

Backup File

—

Export format

—

Note

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Notes / service / modifications

High-quality keypad synth. The keys are small but functional. The Delay effect is part of it.