π This pack contains **24 Neural Amp Modeler (NAM) Direct profiles (DIR / Amp-only)** captured from a **Marshall Silver Jubilee 2555X** head using a controlled, studio-grade reamping and DI workflow. The goal is to deliver authentic, touch-sensitive, and mix-ready profiles reflecting the real dynamic behavior, signature mid-range bite, and power-amp response of this legendary circuit, ready to be paired with your favorite Impulse Responses (IRs).
ποΈ To maintain tonal balance across the collection, Presence and EQ voicings were specifically tailored for each gain stageβtaming harsh upper frequencies while keeping low-end tightness and transient definition intact across both 100W and 50W modes.
ποΈ 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): +8.0 dBu reference headroom
π Studio-Grade Capture & Reamping Chain
The signal is routed through a precision signal chain designed to preserve pure guitar impedance, attack dynamics, and transparent A/D conversion:
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)
Direct Tap (DIR): Speaker output tapped into a Klark Teknik active DI running in parallel with a real reactive speaker load, preserving true power tube and transformer interaction.
Preamps & Return: Midas M32R console preamps providing high headroom, transparent gain staging, and noise-free conversion.
Cabling: Low-capacitance, shielded cables throughout to eliminate noise floor and capacitive tone loss.
π Pack Structure (24 Direct Profiles)
π’ #01 to #06 β 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).
π‘ #07 to #12 β Rhythm Crunch & Diode Clip
Explores the Jubilee's switchable diode clipping circuit. Ranges from light dynamic crunch (#07β#08) to classic 80s hard rock rhythm (#09β#11) and spongy power-sag crunch dialed in 50W mode (#12).
π΄ #13 to #18 β Lead Channel Heavy Rhythms
Dedicated high-gain rhythm voicings. Includes classic British hard rock (#13), modern scooped and razor-tight voicings (#14, #17), and the aggressive mid-forward bite of "Bay Area Thrash" (#18).
π **#19 to #24 β Lead & Solo Voicings**
#19 & #20 Classic Jubilee Lead: Pure and boosted vocal lead sustain. #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 and cutting harmonic presence.
π£ #10, #16, #18, #20, #21 & #24 β 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 enhance pick attack articulation.
π― Purpose of the Pack
Designed for guitarists and producers seeking authentic, responsive Silver Jubilee tones with zero guesswork. Simply load your preferred 4x12 cabinet IR (such as a 2551AV with G12 Vintage) and track directly in your DAW.
