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Basic data
Name
Korg Monotron Delay (Unit A)
Category
5) Analog / semi-modular synthesizers
Type
MONO_SYNTH_WITH_DELAY
Specimen
A
Inventory tag
HW-2024-SY-MONODELYA-001
Condition
OK
Physical parameters
Dimensions (mm)
120 x 72 x 28 mm
Dimensions (inch)
—
Weight
~ 95 g
Format
pocket desktop mono synth
Material
plastic enclosure
Manufacturing (Period)
—
Manufacturer
—
Power
Voltage
AAA (2x)
Current (typical)
40 mA
Current (max)
80 mA
Polarity
N/A
Connector
Battery compartment
AC/DC
DC
Internal/External
Internal
Note
Battery operation, can be powered through external battery pack adaptation.
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)
1.0
Check date
2026-03-03
Previous version
N/A
Bootloader
N/A
Update Link
N/A
Backup File
N/A
Quick Summary
Pocket analogue ribbon synthesizer with Space Delay effect, LFO and battery operation (AAA).
Product Description
—
Features and functions
- Ribbon Synthesizer (monophonic)
- Analog sound engine
- Space Delay Effect
- LFO (triangle + square)
- Polyphonies: 1
- Headphones 3.5 mm TRS
- Line input 3.5 mm TRS
- Battery power AAA (2x)
- No MIDI and no USB
Primary I/O (quick orientation)
| Domain | Inputs | Outputs | Note |
|---|---|---|---|
| Audio | Audio IN (3.5 mm TRS) | Headphone OUT (3.5mm TRS) + Speaker | Output impedance 100 Calculation |
| Sync | Sync IN (3.5mm TS) | Sync OUT (3.5mm TS) | Compatible with Korg volca sync |
Controls
FRONT / TOP (user control)
- Keyboard Ribbon
- VCO pitch knob
- VCF cutoff
- Time / feed back delay control
- Master volume
Service / hidden elements
- (None)
Connectors and connections
Connector matrix
| Interfaces | IN | OUT | Spec / note |
|---|---|---|---|
| Audio | Audio IN (3.5 mm TRS) | Headphone OUT (3.5mm TRS) + Speaker | Output impedance 100 Calculation |
| Sync | Sync IN (3.5mm TS) | Sync OUT (3.5mm TS) | Compatible with Korg volca sync |
Latency and jitter
Clock sources
Internal LFO, Sync IN
Clock IN/OUT format
Sync pulses
Typical latency
< 5 ms
Jitter spec
Type. < 50 ppm (internal clock)
Buffer support
N/A
Impedance and signal levels
Line Level (dBu)
-10 dBV
Mic In level
N/A
Output Impedance
100 ohm
Input Impedance
100 kohm
THD
< 0.5%
Frequency Range
20 Hz - 20 kHz
Other Specifications (from metadata.specifications)
| Key | Value |
|---|---|
| No other specifications | |
Additional technical details
| Key | Value |
|---|---|
| No additional technical details | |
Typical routing
- Portable mono synth: A separate mono synth with a delay texture.
• Connect headphones or line input
• Play on the ribbon keyboard
• Disconnect pitch / filter / delay 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
- Official site of manufacturer
- eBay - search for Korg Monotron Delay (Unit A)
- Aukro.cz - search Korg Monotron Delay (Unit A)
- MusicyBazar.cz - search Korg Monotron Delay (Unit A)
- MIDI.cz - search for Korg Monotron Delay (Unit A)
- Kytary.cz - search for Korg Monotron Delay (Unit A)
- Heureka.cz - search Korg Monotron Delay (Unit A)
- Gear4music.cz - search Korg Monotron Delay (Unit A)
- Muziker.cz - search Korg Monotron Delay (Unit A)
Service log
| Date | Event | Who | Note |
|---|---|---|---|
| 2026-03-03 | Initial inventory | Studio tech | Added to inventory — unit A |
Presets / User banks
Storage type
—
Number of banks
N/A
Current bank
N/A
Backup File
N/A
Export format
N/A
Note
—
Notes / service / modifications
- Compact and portable mono synth (pocket format - 19cm × 12cm).
- Ensure fresh AAA batteries (2x) for stable operation.
- Excellent for experimenting in the field (busking, live jams, sketches).
- The VCO + Ladder filter analog provides autenic vintage sounds without digital elements.
- Integrated delay effect is useful for spatial textures and echo effects.
- Sync IN / OUT allows for synchronization with other Volca units (5V trigger signal).
- Stable audio outputs at 3.5mm jack - suitable for monitoring via headphones or connect to the mix.
- The model is led as Unit A of 2 pieces; the sister piece is Unit B (corg- monotron-delay-b.json).