The 'brown sound' that changed rock guitar forever. Eddie Van Halen's tone on the debut Van Halen album is a Frankenstrat with a single humbucker through a Marshall Plexi 1959, reportedly powered through a variac to lower the voltage and achieve a thick, compressed, harmonically rich overdrive at manageable volumes. An MXR Phase 90 adds a subtle swirl. The result is a warm, singing sustain that is neither too clean nor too distorted — it sits in a magical sweet spot that responds to every nuance of Eddie's playing.