Carlsbro 100 TR - Bass preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 100 TR is a 100-watt Carlsbro valve amp with Bass and Treble channels. The Treble channel adds transistor-driven spring reverb and a Top Cut control, and an ECC83 lamp/LDR tremolo with speed and depth is included. An ECC83 long-tail phase inverter drives four fixed-bias EL34s.

Tags: british, vintage, el34, reverb, tremolo, 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.