John Petrucci - Guitar Setup & Tunings

Dream Theater

Quick Facts

Primary Tuning
Standard
String Gauge
.010, .012, .016, .024, .036, .046 (6-string), .009-.056 (7-string)
String Brand
Ernie Ball (Custom gauges)
Genre
Metal

About John Petrucci's Sound

John Peter Petrucci (born 1967) is Dream Theater's founder and guitarist, widely considered one of the most technically accomplished rock guitarists ever. His playing spans metal, progressive rock, and jazz fusion with equal facility. Petrucci co-founded the Berklee-spawned Dream Theater in 1985, and the band has led progressive metal ever since. His signature Music Man guitars and Mesa Boogie amplifiers became industry standards. Beyond Dream Theater, Petrucci has released solo albums, collaborated with Joe Satriani, and teaches through instructional materials. His work ethic and continuous improvement are legendary in guitar circles.

Tunings Used

E Standard - 6 songs

Drop D (6-string) - 1 song

B Standard (7-string) - 1 song

Drop A (7-string) - 1 song

String Setup

Primary Strings

Ernie Ball (Custom gauges)

.010, .012, .016, .024, .036, .046 (6-string), .009-.056 (7-string)

Why John Petrucci uses these

Petrucci's custom string gauges vary depending on the guitar - his 6-strings use .010-.046 with a heavier wound G (.024), while his 7-strings use .009-.056. The heavier wound G string improves intonation for his precise playing. He changes string gauges throughout tours as his fingers toughen. His Music Man Majesty guitars feature floating tremolos requiring careful string tension balance. Petrucci's technique demands consistent response - he practices scales and exercises for hours daily even after decades of professional playing. His signature Ernie Ball strings are available in his exact specifications.

Sources

Last updated: January 2026

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