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The Marshall JCM800 2203 Modified (EL34) NAM pack
Summary
This pack features the 2025-released Marshall JCM800 2203 Modified (EL34) captured using a
real Mesa 4x12 Oversized Straight cabinet loading down the amplifier.
Calibrated profiles (STANDARD & xSTD architectures) showcase the amp’s tonal range.
AMP, POW, and PRE profiles capture maximum flexibility and accuracy using a high-quality signal chain.
AMP and POW profiles use a real Mesa 4x12 Oversized Straight cabinet for the most faithful experience.
This full pack includes includes:
• 110 x AMP profiles (1 x DI and 5 mic-ed up, full-rig flavors for every knob combination used)
• 38 x PRE profiles
• 11 x POW profiles (1 x DI and 5 mic-ed up, full-rig flavors for every knob combination used)
• 20 x OD pedal profiles
TOTAL: 1,568 individual NAM files (784 in STD architecture, 784 in xSTD architecture)
Efficiency
Streamlined for users across platforms (Dimehead, Valeton GP-5 etc), AMP & POW profiles offer 6 flavors:
• DI = raw poweramp <-> cab signal tapped with a DI box, no Microphone
• SM57 = full-rig chain, cab mic-ed with a Shure SM57 on the top-left speaker
• SM58 = full-rig chain, cab mic-ed with a Shure SM58 on the top-right speaker
• BLEND #1: full-rig chain, cab mic-ed with 2 mics (Shure SM57 & SM58) blended
• BLEND #2: full-rig chain, cab mic-ed with 2 mics (Shure SM57 & SM58 @ +3dB) blended
• BLEND #3: full-rig chain, cab mic-ed with 2 mics (Shure SM57 @ +3dB & SM58) blended
Reamp chain details
• RME Fireface UCX II -> Lehle P-SPLIT III -> Marshall JCM800 2203 Modified -> St.Rock React:IR II (Mesa 4x12 OS Straight load) -> RME Fireface UCX II
• SEND level: 18.995 dBu
• RETURN level: 13.195 dBu
Use the new "Calibration" feature (video linked) in the NAM plugin to get the most out of these profiles:
https://www.neuralampmodeler.com/post/neuralampmodelerplugin-v0-7-12-is-released
Naming convention summary
• [AMP] = full head (pre & poweramp)
• [PRE] = preamp section; use a poweramp + IR or tube amp & cab
• [POW] = poweramp only; use a preamp (and IR if using DI)
• [OD] = overdrive pedal
• LO = low sensitivity input used
• HI = high sensitivity input used
• STD = STANDARD architecture; works on Dimehead NAM Player
• xSTD = custom architecture (by Андрей Полевой) from NAM FB
• TSMINI = Tube Screamer Mini
• MXRM77 = MXR Custom Badass Modified O.D.
• FORTIN14 = Fortin Fourteen
• DWHAMER = PedalPCB Dwarven Hammer
• DFXKoD = DemonFX King of Drive
• DFXKLON = DemonFX Centaur
• DFXDBOOST = DemonFX Dual Boost, Exotic EP mode
Spreadsheet with settings & inspiration for all profiles:
https://mega.nz/file/mtgzASrR#hRpRWaCq-1RZ7GSQzyXZcpq5ITMFaOUvr3jbr5nvsaw
Rock on!
SummaryThis pack features the 2025-released Marshall JCM800 2203 Modified (EL34) captured using a
real Mesa 4x12 Oversized Straight cabinet loading down the amplifier. Calibrated profiles (STANDARD & xSTD architectures) showcase the amp’s tonal range.
AMP, POW, and PRE profiles capture maximum flexibility and accuracy using a high-quality signal chain.
AMP and POW profiles use a real Mesa 4x12 Oversized Straight cabinet for the most faithful experience.
This full pack includes includes:
• 110 x AMP profiles (1 x DI and 5 mic-ed up, full-rig flavors for every knob combination used)
• 38 x PRE profiles
• 11 x POW profiles (1 x DI and 5 mic-ed up, full-rig flavors for every knob combination used)
• 20 x OD pedal profiles
TOTAL: 1,568 individual NAM files (784 in STD architecture, 784 in xSTD architecture)
Efficiency Streamlined for users across platforms (Dimehead, Valeton GP-5 etc), AMP & POW profiles offer 6 flavors:
• DI = raw poweramp <-> cab signal tapped with a DI box, no Microphone
• SM57 = full-rig chain, cab mic-ed with a Shure SM57 on the top-left speaker
• SM58 = full-rig chain, cab mic-ed with a Shure SM58 on the top-right speaker
• BLEND #1: full-rig chain, cab mic-ed with 2 mics (Shure SM57 & SM58) blended
• BLEND #2: full-rig chain, cab mic-ed with 2 mics (Shure SM57 & SM58 @ +3dB) blended
• BLEND #3: full-rig chain, cab mic-ed with 2 mics (Shure SM57 @ +3dB & SM58) blended
Reamp chain details• RME Fireface UCX II -> Lehle P-SPLIT III -> Marshall JCM800 2203 Modified -> St.Rock React:IR II (Mesa 4x12 OS Straight load) -> RME Fireface UCX II
• SEND level: 18.995 dBu
• RETURN level: 13.195 dBu
Use the new "Calibration" feature (video linked) in the NAM plugin to get the most out of these profiles:
https://www.neuralampmodeler.com/post/neuralampmodelerplugin-v0-7-12-is-released
Naming convention summary• [AMP] = full head (pre & poweramp)
• [PRE] = preamp section; use a poweramp + IR or tube amp & cab
• [POW] = poweramp only; use a preamp (and IR if using DI)
• [OD] = overdrive pedal
• LO = low sensitivity input used
• HI = high sensitivity input used
• STD = STANDARD architecture; works on Dimehead NAM Player
• xSTD = custom architecture (by Андрей Полевой) from NAM FB
• TSMINI = Tube Screamer Mini
• MXRM77 = MXR Custom Badass Modified O.D.
• FORTIN14 = Fortin Fourteen
• DWHAMER = PedalPCB Dwarven Hammer
• DFXKoD = DemonFX King of Drive
• DFXKLON = DemonFX Centaur
• DFXDBOOST = DemonFX Dual Boost, Exotic EP mode
Spreadsheet with settings & inspiration for all profiles:https://mega.nz/file/mtgzASrR#hRpRWaCq-1RZ7GSQzyXZcpq5ITMFaOUvr3jbr5nvsaw
Rock on!
