| String | Note | Frequency |
|---|---|---|
| 6 | D2 | 73.42 Hz |
| 5 | A2 | 110.00 Hz |
| 4 | D3 | 146.83 Hz |
| 3 | G3 | 196.00 Hz |
| 2 | B3 | 246.94 Hz |
| 1 | E4 | 329.63 Hz |
From standard to Drop D in one string
Drop D needs only one peg. Press Start tuner, allow the microphone, and pluck the low string. The tuner knows the target is now D2, so while the string still sits at E it reads +200¢ and says Tune down 2 semitones. Turn the 6th string’s peg to loosen it, plucking as you go: the hint drops to one semitone, then to cents, and the needle takes over for the last part. Finish when the needle rests in the green band, then check the other five strings once: they should still read green, and if one moved, touch it up.
If you go too far and the string reads flat, the hint switches to Tune up: tighten a little and pluck again. The strobe band under the needle slows down as you get close and stands still at D2.
Why players use it
With the low string at D, the three lowest strings (D A D) form a power chord played open, and a single finger across the 6th, 5th and 4th strings at the same fret moves it anywhere on the neck. It also adds a whole step of range at the bottom for songs in D.
The same on bass
Bass players drop the E string to D1 (36.71 Hz) the same way: choose Bass and Drop D (D A D G) in the menus, or start from the bass tuner. To hear the Drop D notes instead, the guitar tuning tones page has a Drop D row.