Tune your guitar to Open D (6-string) with a strobe display that resolves to less than 0.1 cent. The table below lists every target string; click to launch the tuner already set to Open D.
Open the free Open D tuner| # | Note | Hz |
|---|---|---|
| 1 | D2 | 73.42 |
| 2 | A2 | 110.0 |
| 3 | D3 | 146.8 |
| 4 | F#3 | 185.0 |
| 5 | A3 | 220.0 |
| 6 | D4 | 293.7 |
A needle answers "what is the average pitch right now?" A multi-harmonic strobe adds an extra layer to the tuning visualization by showing several harmonics at once, so you can fine-tune more confidently to fractions of a cent.
Published by Applicaudia, the maker of StroboPro. The less than 0.1 cent figure describes the tuner's display resolution, not a lab-measured accuracy specification. Frequency values are equal-temperament approximations.