SYNERGY MARSHALL JCM 800 DUAL CHANNEL THREE-TUBE PREAMP MODULEFew amplifiers have achieved the near mythic status of the Marshall JCM 800. When it first roared to life in the early 1980s, it didnt just define an era it ignited it. Kicking off a new generation of tones, the JCM 800 became the definitive voice of hard rock and heavy metal. Big, aggressive, and unmistakably British. It took the foundational crunch of the Plexi and added the gain, punch, and focus that powered a generation of guitar heroes. Marshall