Marshall JCM2000 DSL100 - Ultra Gain preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The JCM2000 DSL100 is the 100-watt Dual Super Lead head from 1997, with Classic Gain (clean/crunch) and Ultra Gain (lead 1/lead 2) channels. LDR-based channel switching, deep and tone-shift switches, reverb and an effects loop sit in front of four EL34s. It became one of Marshall's most widely used heads of the late 1990s and 2000s.

• Years produced: 1997–2012
• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: 4× ECC83
• Power tubes: 4× EL34

Known for: Adrian Smith.

Heard on: El Dorado — Iron Maiden (2010).

Tags: british, crunch, high-gain, el34, high-wattage, two-channel, reverb.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.