One thing has stayed consistent throughout John Petrucci's long and successful career: the DiMarzio pickups in his guitars. John has been pushing the envelope of progressive metal since the late eighties, and the DiMarzio DP228 Crunch Lab Bridge Model ensued from the most recent collaboration with John. He used it throughout Dream Theaters tenth studio album, Black Clouds & Silver Linings. John swears this is the best live and studio sound he has ever had, and the name says it all crunch is what its all about with a big, tight sound thats neither muddy nor thin.
Tech Talk The Crunch Lab is noteworthy (bad pun alert) for what it doesn't do: it's 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 guitar's tuning.