Korg At2 'link' -

The Korg AT2: A Revolutionary Electronic Organ for the Modern Musician

While Korg has released many tuners over the years, the AT-2 (and its successors in the AT series) is revered for its needle-style meter accuracy packed into a stomp-box-sized chassis. korg at2

1. What is the Korg AT-2?

The Korg AT-2 is a professional-grade, compact chromatic tuner. Unlike standard guitar tuners that are limited to specific notes (E, A, D, G, B, E), a chromatic tuner like the AT-2 can identify any of the 12 notes of the chromatic scale. This makes it compatible with virtually any instrument, from guitars and basses to saxophones, violins, and instruments with alternate tunings. The Korg AT2: A Revolutionary Electronic Organ for

Alternatives (Modern Options)

Since the AT-2 is discontinued, consider these alternatives: The Korg AT-2 is a professional-grade, compact chromatic

How It Compares Today

Modern alternatives include:

Educational Use: Some instructors use Korg tuners to create "intonation games" for students, where they must keep the tuner light green while playing specific passages to develop ear and finger placement.  Documentation and Manuals 

Built-in Microphone: Allows for tuning acoustic instruments without needing a cable.