• Compact, unique high-performance guitar & bass tuner with a high-visability display
• Three tuning modes: Strobe, Mirror, and Meter. Built-in condenser microphone; Line input
• Supports seven-string guitars and six-string basses; Quinta-flat (5 semitones) drop tunings
• Wide Detection Range of A0-C8; Adjustable Calibration Range of 410Hz-480Hz
• Comfortable, logical controls for hand held use; designed for low power consumption

The GT-4 is a unique style of chromatic tuner in which LEDs around its circumference indicate how close the input pitch is to the note name displayed in the center. In spite of its compact size (fits in the palm of your hand), the illuminated circumference and large note name display provide excellent visibility, allowing high-precision tuning over a range of A0 (27.50 Hz)-C8 (4186.01 Hz). The adjustable calibration lets you specify the reference pitch in a range of 410 Hz-480 Hz (1 Hz steps).