The DiMarzio DP707 LiquiFire 7 String Humbucker Guitar Pickup was designed after extensive collaboration between John Petrucci and DiMarzio and the results are incredible! John used it throughout Dream Theater’s tenth studio album, ‘Black Clouds & Silver Linings’. The DiMarzio LiquiFire 7 has a flowing, singing solo tone when used with a heavily overdriven amp and a clear chord sound with a clean amp setting.
The sound John likes in the neck position of his 6-string translates very well to the 7-string, with fat highs and clean lows for smooth solos and tight bass lines. The LiquiFire 7 isn’t an exact duplicate of the 6-string version. The attack is a little more focused and the voicing is shifted down about 500Hz to bring out the sound of the seventh string.