Ceriatone JTM46 All Access - High Treble preset

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

The JTM46 All Access is Ceriatone's JTM45-style head with mod switches. Three ECC83s run Normal (with push-pull) and Bright volumes into a cathode-follower tone stack with bass, middle, treble and presence, then a long-tail inverter driving two KT66s from a GZ34 that can be switched to solid-state. Bright, tone-stack bypass, V2A cathode, presence-cap and feedback switches join a post-PI master, buffered effects loop and half-power switch.

• Made in: Malaysia
• Wattage: 50W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 2× KT66

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

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.