🔊 This pack contains 24 Neural Amp Modeler (NAM) Full Rig (Amp + Cab + Mic) profiles captured from a Marshall Silver Jubilee 2555X head paired with a matching Marshall 2551AV 4x12 cabinet (loaded with Celestion G12 Vintage / Vintage 30 speakers) using a controlled, studio-grade reamping and miking workflow. The goal is to deliver authentic, touch-sensitive, and mix-ready profiles reflecting the full acoustic punch, signature mid-range cut, and physical speaker cone breakup of this legendary rig—ready to play with zero additional processing required.
🎚️ To maintain tonal balance across the collection, Presence and EQ voicings were specifically tailored for each gain stage—taming harsh upper frequencies while keeping low-end tightness, punchy cab resonance, and transient definition intact across both 100W and 50W modes. Miking positioning was meticulously locked to preserve absolute phase coherence and sonic consistency throughout the entire tracking session.
🎛️ Gain Staging & Calibration
These profiles were captured using mathematically verified reference levels:
⚫ Input Calibration (Send): +7.5 dBu (calibrated through active reamp attenuation)
⚫ Output Calibration (Return): -5.0 dBu reference headroom
🔀 Studio-Grade Capture & Reamping Chain
⚫ D/A Conversion & Send: MOTU M4 (ESS Sabre32 Ultra DAC line out @ +16 dBu)
⚫ Reamp Box: Radial X-Amp (Active Class-A buffer & transformer isolation)
⚫ Amplifier & Cabinet: Marshall Silver Jubilee 2555X driving the matching Marshall 2551AV 4x12 cab (Celestion G12 Vintage) for authentic cabinet resonance and natural air displacement.
⚫ Dual-Mic Blend: A phase-aligned blend of two Shure SM57 dynamic microphones positioned on the speaker cone (combining cap-edge bite with smooth cone body) for the ultimate aggressive, mix-ready rock & metal voice.
⚫ Preamps & Return: Discrete Midas M32R console preamps providing high headroom, rich harmonic detail, and noise-free conversion.
⚫ Cabling: Low-capacitance, shielded cables throughout to eliminate noise floor and capacitive tone loss.
📂 Pack Structure (24 Full Rig Profiles)
🟢 #01 to #06 — Clean Channel Versatility
From pristine glass cleans and warm vintage voicings to edge-of-breakup dynamics (#03 in 50W mode), pushed clean breakup, and a high-headroom pedal platform (#06), delivering full-bodied acoustic depth from the 4x12 cab.
🟡 #07 to #12 — Rhythm Crunch & Diode Clip
Explores the Jubilee's switchable diode clipping circuit pushed through the speakers. Ranges from light dynamic crunch (#07–#08) to classic 80s hard rock rhythm (#09–#11) and spongy power-sag crunch dialed in 50W mode (#12).
🔴 #13 to #18 — Lead Channel Heavy Rhythms
Dedicated high-gain rhythm voicings tracked for heavy studio productions. Includes classic British hard rock (#13), modern scooped and razor-tight voicings (#14, #17), and the aggressive, cutting mid-forward bite of "Bay Area Thrash" (#18).
👑 #19 to #24 — Lead & Solo Voicings
#19 & #20 Classic Jubilee Lead: Pure and boosted vocal lead sustain pushing the speaker cones. #21 to #23 50W Power Sag & Singing Leads: Saturated, compressed, and fluid solo tones leveraging 50W triode operation (Fusion, Singing Vocal, and Liquid Solo). #24 Searing Shred: Blistering, high-gain modern lead dialed for effortless legato, thick harmonic overtones, and biting presence.
🟣 #10, #16, #18, #20, #21 & #24 — Keeley Noble Screamer Boosts
Selected crunch and lead voicings pushed by the Keeley Noble Screamer (TS and OD circuits) to tighten sub-bass frequencies and deliver immediate, percussive pick attack through the cab.
🎯 Purpose of the Pack
Designed for guitarists and producers seeking a complete, plug-and-play vintage Marshall half-stack sound. No IR loading or extra tweaking needed: load any profile directly into NAM and get an authentic, studio-mic'd Silver Jubilee track instantly sitting in your mix.
