Ceriatone JTM101 All Access - High Treble preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The JTM101 All Access is Ceriatone's 100-watt take on Marshall's mid-1960s JTM100-era heads, running four KT66s with twin GZ34 rectifiers that can be switched to solid-state. Three ECC83s feed jumperable Normal and Bright channels with a Plexi-style tone stack, plus a post-phase-inverter master and All Access voicing switches. KT66s give a rounder, warmer crunch than EL34s.

• Made in: Malaysia
• Wattage: 100W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 4× KT66

Tags: kt66, crunch, vintage, boutique, hand-wired, two-channel, high-wattage.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.