Few amplifiers have achieved the near mythic status of the Marshall JCM 800. When it first roared to life in the early 1980s, it didn’t 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 JCM 800 2203 (100w) and 2204 (50w) circuits, with their single channel, cascaded gain stages, and signature midrange roar, delivered a level of authority and articulation that set them apart from anything before or since. It was the perfect balance of power and precision. For countless players, the JCM 800 isn’t just an amplifier – it is the amplifier. Now, Synergy and Marshall have teamed up once again to bring you, for the first time ever, this legend in a three-tube, dual-channel preamp module. Utilizing Marshall’s original circuit design, the JCM 800 module delivers the raw energy, attack, and articulate overdrive of the iconic vertical-input 2203/2204 amplifiers. Whether you’re chasing the three-dimensional crunch of 80s rock or crushing tight gain for modern metal, the JCM 800 module gives you the legendary tonal experience that defined a generation.

Product Features

• Triple 12AX7-loaded preamp module based on Marshall's legendary JCM 800 2203
• Delivers the same aggressive midrange bite, punchy low end, and crisp highs as the full-size amp
• Built-in Zero Watt power amp section replicates the original amp's phase inverter circuitry
• 2 identical channels with dedicated Bass, Middle, Treble, Preamp, and Presence controls
• Independent Master volume knobs allow you to attain a precise level balance between the channels
• Per-channel High/Low switches enable you to toggle between low-gain grind and high-gain crunch
• 2 Bright switches allow easy adjustment of the bright caps
• 3-position cathode select switch for configuring the input tube bias setting

Attributes

• Color: Gold

Technical Specifications

• Type: Tube
• # of Channels: 2
• Dimensions: 1.5" H x 7" W x 5.5" D
• Preamp Tubes: 2 x 12AX7, 3 x 12AX7