Earthquaker Crimson Drive Germanium OverdriveThe Crimson Drive is a cutting and dynamic overdrive designed around a single germanium transistor and vintage germanium diodes. It creates a very open tone with excellent harmonics and a pleasing raw grit that can't be duplicated with more common FET or opamp based overdrives. With a simple twist of the gain control, the Crimson Drive can go from a gritty Rangemaster style treble boost to a rattling overdriven sound that is reminiscent a vintage