Detail 01
Detection accuracy within ±0.1 cents
Enables close pitch checks and microtuning work.
Product detailSKU #1500000439797
KORGST1K Synthesizer Tuner
1/7
Independent shopping perspective
The Korena take
KORG’s ST1K is a compact tuner for analog synthesizers and modular rigs, with ±0.1-cent detection accuracy for close oscillator adjustment and small pitch-error checks. Its input circuitry is optimized for the high voltage levels found in modular synths. A CMD LCD display, LEDs, and 3D meter provide visual tuning feedback, while Regular, Strobe, and Half Strobe modes show pitch deviation in different ways. It runs on two AAA batteries and includes mono input and output connections.
Strong match
Who this is for
- Microtuning analog-synth oscillators when very small pitch deviations need to be checked.
- Checking modular-rig tuning before a performance or recording session.
- Working with high-voltage modular-synth signals through a tuner designed for those levels.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Detection range: A0 (27.50 Hz) to C8 (4186 Hz)
Defines the pitches the tuner can detect.
Detail 03
A4 calibration: 436–445 Hz, 1 Hz steps
Lets you set the A4 reference across that range.
Detail 04
Regular, Strobe, and Half Strobe modes
Provide different visual indications of pitch deviation.
Detail 05
Input and output: monaural standard
Provides mono input and output connections.
Detail 06
Power: two AAA batteries
Uses two AAA manganese, alkaline, or nickel-hydrogen rechargeable batteries.
Final check
Know before you order
- 01The tuner requires two AAA batteries.
- 02Its approximately 50-hour battery-life figure is based on manganese AAA batteries, continuous A4 input, and Regular display mode.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How accurate is the ST1K?
Its detection accuracy is within ±0.1 cents.
02What pitch range can it detect?
It detects from A0 (27.50 Hz) through C8 (4186 Hz).
03Can it be used with modular synth voltage levels?
Yes. Its input circuitry is optimized to handle high voltage levels from modular synths.
04What meter modes are available?
Regular, Strobe, and Half Strobe modes are available.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsPickups & controls
- Switches
- Power, Display, Calib
2 detailsPlayability
- Scale
- 12 averages
- Scale Length
- 12
3 detailsConnections & power
- Connectors
- Input (monaural standard), Output (monaural standard)
- Power Supply
- 2 AAA batteries (manganese dry cell: R03, alkaline dry cell: LR03, or nickel-hydrogen rechargeable battery)
- Battery Life
- Approx. 50 hours continuous (AAA manganese dry cell batteries, A4 continuous input, display mode: regular)
2 detailsSize & weight
- Weight
- 2.93
- Dimensions
- 3.90 inch (W) x 2.56 inch (D) x 0.63 inch (H) (99 mm x 65 mm x 16 mm)
3 detailsOther
- Detection Range
- A0 (27.50Hz) to C8 (4186Hz)
- Detection Accuracy
- Within ±0.1 cents
- Calibration Range
- A4=436 to 445 Hz (1 Hz steps)
