Butcher Babies Jason Klein (ex- Butcher Babies) – GEAR MASTERS (Revisited) Ep. 66 [VIDEO] On this episode of DTB’s “Gear Masters (Revisited)”, the metal bassist, Jason Klein (ex- Butcher Babies), shows off the gear that he uses onstage, while on tour with Megadeth, Amon Amarth, Suicidal Tendencies and Metal Church.