What Is a Guitar Tuner?
A guitar tuner helps match each string to its intended pitch.
In simple terms
In standard tuning, the strings are E, A, D, G, B and E from lowest to highest. Reference tuners play these notes so you can tune by ear.
Why tuning matters
Even correct chords sound wrong when strings are out of tune. Tune before practising and recheck after temperature changes or string adjustments.
How to tune
Play one string, compare it with the reference pitch and adjust the tuning peg gradually. Stop when the pitches match.
Reference versus microphone tuners
A reference tuner plays the target note. A microphone tuner listens to your string and shows whether it is sharp or flat.