Korg - At2

(Auto Tuner) is a vintage chromatic tuner, primarily released in the late 1980s or early 1990s. It was known for its accuracy in a compact, portable form factor, serving as a reliable alternative to the larger strobe tuners of its era. Core Features Automatic Chromatic Tuning

: Unlike single-instrument tuners, it automatically detects any of the 12 semitones, making it suitable for guitar, bass, violin, and other orchestral instruments. Visual Interface

: It uses a classic needle-style meter supplemented by red/green "Flat/Sharp" LEDs to provide precise pitch feedback. Audio Inputs Built-in Microphone

: Allows for tuning acoustic instruments in quiet environments. Bypass Jack korg at2

: A 1/4-inch input and bypass jack allows electric musicians to keep the tuner in their signal chain during performances.

: A handheld device with a dark chassis, measuring approximately 5.2" x 2.6" x 1.3" and weighing about 0.4 lbs with batteries. Technical Specifications Specification Power Source 9V battery Dimensions 133(W) x 67(D) x 34(H) mm ~180g (including battery) Country of Origin Japan (Vintage models) or Taiwan Legacy and Successors The AT-2 is considered a predecessor to the widely popular Korg CA series (like the CA-1 and

), which evolved into the modern, credit-card-sized digital tuners common today. While modern equivalents like the (Auto Tuner) is a vintage chromatic tuner, primarily

are lighter and offer longer battery life (up to 200 hours), some purists still prefer the sensitivity and steady needle response of the older AT-2. Equipboard Brand New NEW KORG AT-2 Auto Chromatic Tuner - eBay

Key Features

High-Quality Sound Engine: Based on Korg’s acclaimed Hi (Harmonic Integrated) synthesis system, the AT-2 delivers rich, natural instrument sounds—acoustic pianos, electric pianos, organs, guitars, basses, drums, brass, and strings—far above typical GM (General MIDI) modules of its era.
300+ Accompaniment Styles: From pop, rock, and jazz to Latin, ballroom, and world music. Each style includes multiple variations (intro, verse, chorus, fill-in, ending) to keep arrangements lively.
Intelligent Chord Recognition: Play simple triads on a MIDI keyboard, and the AT-2 interprets them correctly. For advanced users, it also recognizes slash chords and extended voicings.
Real-Time Control: Via MIDI controllers or optional footswitches, you can trigger fills, switch variations, start/stop rhythm, and control volume without touching the unit.
Compact & Portable: Roughly the size of a VHS tape (or a thick paperback), it runs on batteries or a power adapter, making it perfect for gig bags, busking rigs, or cramped keyboard stands.

Calibration Function

The AT-2 is not stuck at A=440Hz. It features a calibration mode that allows you to adjust the standard pitch (usually between 410Hz and 480Hz).

The Use Case: Essential for tuning to pianos that may have drifted, or for orchestral settings where the ensemble tunes to A=442Hz.

3. Silent Practice with Quality Sound

Built-in piano sounds (based on Korg’s stereo multi-sampled grand piano).
Headphone jack (1/4” and 1/8”) with volume control.
Reverb effect for realism.

Who Is It For?

Keyboardists wanting to add full backing tracks to solo piano or organ gigs.
Saxophonists, guitarists, vocalists using a MIDI controller or wind controller (e.g., Akai EWI) to drive arrangements.
Home practice – a fun tool for improvising over realistic band grooves.
Songwriters needing quick, quality rhythm tracks without DAW complexity.

The Last Chromatic Tuner You’ll Ever Need: A Deep Dive into the Korg AT-2

Headline: Precision Meets Durability: Why the Korg AT-2 Remains a Studio Standard Key Features

In a market flooded with cheap, plastic clip-on tuners and complex pedalboard units, the Korg AT-2 stands out as a masterpiece of utilitarian design. It isn't just a tuner; it is a benchmark for accuracy. Whether you are a luthier, a session guitarist, or a pianist, the AT-2 represents the "Gold Standard" of chromatic tuning.

Here is everything you need to know about this legendary device.

Korg AW-AT2 Review: The Pilot’s Choice for Wind & Brass

Verdict: 9/10 – Essential for band rooms, but not for guitars.

The Luthier and Tech

Because of its calibration capabilities and needle precision, the AT-2 is a favorite for setting intonation on guitars. When you are adjusting saddle screws, you need to know exactly where the pitch lands, not just "close enough."