Dobro / Resonator tuner — Open D (DADF#AD)
D-A-D-F#-A-D · Open
—2
Microphone off
··· Hz
This free online tuner listens through your microphone and shows how close each string of your Dobro / Resonator is to Open D (DADF#AD) tuning (D-A-D-F#-A-D). Play a string, watch the needle, and turn the peg until the meter glows green. If you prefer tuning by ear, tap any string card to hear its reference tone.
Other Dobro / Resonator tunings
Chords for this tuning
How do I tune my Dobro / Resonator to Open D (DADF#AD)?
Allow microphone access, pluck a string, and the tuner will detect it automatically. The needle shows whether the string is flat or sharp — adjust until the reading is within ±5 cents (D-A-D-F#-A-D).
Which notes are used in Open D (DADF#AD) tuning?
Open D (DADF#AD) tuning for Dobro / Resonator uses the notes D-A-D-F#-A-D, listed from the lowest string to the highest.
Can I tune without a microphone?
Yes. Every string card plays a reference tone — tap it and match your string to the sound by ear.