Marshall Jtm3 60 02 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Marshall JTM30 was a 30W two-channel combo from the 1990s JTM series, featuring ECC83 preamp and EL34 power stages in a portable 1×12 format. It offered a cleaner-voiced clean channel alongside a gain channel, bridging vintage JTM aesthetics with modern versatility.

Tags: british, combo, 90s, low-watt.

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.