London City DEA 100 (Early) - Channel 1 preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The London City DEA 100 (early) is a 100-watt all-tube head from the Dutch maker London City, laid out much like a Plexi. Two channels, each with two inputs and its own volume, are mixed into a gain stage and a cathode follower driving a treble, bass and middle stack. An ECC83 long-tailed-pair phase inverter with presence and negative feedback drives four fixed-bias EL34s from a solid-state rectifier, giving a raw, Marshall-like EL34 crunch.

• Made in: Netherlands
• Wattage: 100W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 4× EL34

Tags: dutch, vintage, el34, two-channel, high-wattage, crunch.

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.