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A Different Kind of Truth as a whole. It's a crowner for Dave's return, and also seals the doubt whether Wolf is a competent enough musician to ride on his dad and uncle's legacy.
Eddie Van Halen's use of high-gain guitars, amps and effects, modernized and perfected "shredding" technique of two-handed tapping and whammy-bar manipulation (especially as heard on his solo piece from Van Halen, "Eruption"), and the use of what would be known as "superstrat" guitars (many of them self-made), all taken to extents that even Jimi Hendrix nor many of the guitar heroes of the day had brought the guitar, heralded a new era of guitar heroics in The Eighties.
And it basically was a kid in a garage with limited equipment and technical know-how, looking for a sound and a style that inspired him. He apparently built the Frankenstrat from a guitar kit, spare parts and a Charvel neck, soldered the electronics himself (only the rear pickup works) and bought his first Marshall amp from a club he played, which was the club's house PA system. He was self-taught on guitar, reportedly expanding two-handed tapping on a technique he aped from Jimmy Page during a Led Zeppelin concert he went to.