# Chromatic Tuner Korg OT-12O, grey, LCD display, 6.35 mm input, calibration 349–499 Hz

**URL:** https://aio.lv/en/product--korg-c1280280130--12010642
**Data updated:** 2026-03-11 20:45 (EET)
**Category:** Musical Instruments
**Manufacturer:** Korg
**Manufacturer code:** C1280280130
**EAN:** 4959112043985
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 88.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 73.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--korg-c1280280130--12010642

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

Korg OT-12O is a compact chromatic tuner with LCD display in grey finish. It accepts instrument input via a 6.35 mm (1/4") jack and offers meter (auto) and sound (manual) tuning modes. Calibration range is 349–499 Hz and the unit is powered by alkaline batteries. Dimensions: 74×120×36 mm. Suitable for guitar, bass and studio tuning tasks.

## Long description

The Korg OT-12O is a compact chromatic tuner in a grey finish with an LCD display and a vertical design that fits easily in the hand. It accepts instrument input via a 6.35 mm (1/4") jack and offers two tuning modes: meter (auto) and sound (manual). Calibration is adjustable across a wide range from 349 to 499 Hz in 1 Hz steps. The unit is battery powered (alkaline) and its physical dimensions are 74×120×36 mm, making it suitable for onstage, rehearsal, and studio use.
Advantages
The OT-12O combines a clear LCD with a needle-type meter for accurate, easy-to-read pitch indication and selectable needle response speed. Its wide calibration range supports alternative concert pitches, while manual sound mode provides a reference tone for ear-based tuning. The compact vertical housing, rear stand and finger-friendly controls support comfortable one-handed operation, and the design is optimized for visibility with an LCD that shows level, calibration, key and note name.
Suitable for
Guitar and bass tuning
Wind and orchestral instrument tuning
Studio setup and rehearsal pitch reference
Key specifications
Tuning type: chromatic
Display: LCD with needle-type indicator
Input: 6.35 mm (1/4") instrument jack
Tuning modes: meter (auto) and sound (manual)
Calibration range: 349–499 Hz (adjustable, 1 Hz steps)
Power: alkaline batteries (battery type: AAA implied by referenced design)
Dimensions: 74 × 120 × 36 mm
How to use
Connect your instrument to the 6.35 mm input jack or rely on the built-in microphone if available for acoustic sources. Select the desired tuning mode: use meter (auto) to have the unit detect incoming pitch automatically, or choose sound (manual) to produce a reference tone and select the note name. Adjust the calibration to match the required concert pitch within the 349–499 Hz range. Observe the LCD and needle indicator to bring the instrument into tune, using the LEDs under the meter as an additional visual cue for pitch deviation.
Usage recommendations
For reliable results, place the tuner on a stable surface using the rear stand or hold it vertically at a comfortable angle. Use the meter mode for quick single-note detection and the sound/manual mode when you need an audible reference tone. Verify calibration before ensemble work to ensure consistent concert pitch across instruments.

## Specifications

| Feature | Value |
|---|---|
| Interface | 6.35 mm (1/4") |
| Weight | 0.193 kg |
| Battery technology | Alkaline |
| Height | 36 mm |
| Width | 74 mm |
| Depth | 120 mm |
| Product colour | Grey |
| Built-in speaker(s) | Yes |
| Display type | LCD |
| Calibration range | 349 - 499 |
| Calibration function | Yes |
| Number of notes | 12 |
| Tuning modes | Meter mode (auto), Sound mode (manual) |

## FAQ

### How much does the Korg OT-12O Chromatic Tuner cost, and is it available for purchase?

The price is 88.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 01.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Korg OT-12O Chromatic Tuner be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Korg products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Korg service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12010642/67495210_large.webp