DiMarzio John Petrucci Crunch Lab Bridge Pickup, F-Spaced - White

The Crunch Lab is noteworthy for what it doesn't do: its not a screamer, and it's not about thundering lows. Its physical appearance is identical to the D Sonic, but the internal design is a lot different. It's louder, and the highs have more depth. The lows and mids are more open, and this is crucial for playing chords with body and presence through a gained-out amp. The voicing of the pickup is also different enough to the point that John prefers the Crunch Lab to be installed in almost all of his guitars (including the JP Bari) with the solid bar toward the neck, regardless of the guitars tuning.