Description

Boss TU12 Chromatic Tuner, $59!

A classic needle-style chromatic tuner widely used by professionals, the Boss TU-12 is known for its accuracy, rugged build, and intuitive analog-style interface.

Type
Chromatic Tuner

Model
TU-12

Manufacturer
Boss

Country of Manufacture
Japan

Year of Introduction
1983

Controls
Pitch Select Switch, Calibration Adjustment, On/Off Switch

Input
1× 1/4″ mono instrument input jack
1× Built-in microphone (for acoustic tuning)

Output
1× 1/4″ mono output jack (bypass)

Power Supply
9V battery or 9V DC (center negative, optional adapter)

Notable Features

  • Analog Needle Meter: Provides precise pitch tracking with smooth visual response

  • Built-In Mic: Allows tuning of acoustic instruments without plugging in

  • Bypass Output: Sends the signal to an amp or effects while tuning

  • Calibration: Adjustable reference pitch (typically 438–445 Hz)

  • Use Case: Popular among touring musicians and techs for on-the-fly accurate tuning with a vintage-style interface