Support for Marshall JCM800 Synergy Preamp Module

Released in 2026, the Marshall JCM800 Synergy Preamp Module is a Dual-channel JCM800 three-tube preamp module with classic 80s crunch and soaring lead gain.

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Troubleshooting & FAQ

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Guides

Settings and controls

Learn how to adjust the sound on your Marshall JCM800 Synergy Preamp Module.

Read guideSettings and controls

Troubleshooting

Learn how to fix common issues with your preamp module.

Read guideTroubleshooting

Documents

Synergy Amps: User manuals

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Synergy Amps: Common questions

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Product details

Dimensions

Height: 38.1 mm; width: 177.8 mm; depth: 139.7 mm

Height: 1.5”; width: 7”; depth: 5.5”

Water resistance

No

Wired connectivity

¼” Instrument cable

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Basic EQ

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Wider EQ

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Reverb

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Heads and Combos

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Modulation

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