Detail 01
Flat tuning: two semitones
It supports tuning down by as much as two semitones.
Product detailSKU #1500000344268
BOSSTU-02 Clip-On Tuner
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Independent shopping perspective
The Korena take
BOSS TU-02 is a clip-on tuner with dedicated modes for guitar, four- and five-string bass, and ukulele. Chromatic mode extends it to alternate tunings and other stringed instruments. For lower-tuned setups, it supports flat tuning down two semitones. Its calibration range runs from 430 Hz to 450 Hz, so you can work from a reference other than the standard 440 Hz setting when the situation calls for it. The quick-change format keeps switching between supported instruments straightforward.
Strong match
Who this is for
- Switching between guitar, bass, ukulele, and alternate-tuned stringed instruments during practice or rehearsal.
- Lower-tuned guitar or bass setups that need tuning up to two semitones flat.
- Sessions using a reference pitch between 430 Hz and 450 Hz.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Calibration: 430 Hz–450 Hz
The reference pitch can be adjusted instead of remaining fixed at 440 Hz.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Does it support five-string bass?
Yes. The TU-02 has dedicated modes for both four-string and five-string bass.
02Can I use alternate tunings?
Yes. Chromatic mode covers alternate tunings and other stringed instruments.
03How far down can it tune flat?
It supports flat tuning over a two-semitone range.
