London City Super DEA 70 MkV - High Treble preset

Verified · 89/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The London City Super Amplifier DEA 70 MkV is a 70-watt head built in Amsterdam, with a Plexi-style layout on three ECC83s and a pair of EL34s. Normal and High Treble channels, each with two inputs and its own Loudness control, feed a gain stage and cathode follower driving treble, bass and middle. A long-tailed-pair inverter with presence drives fixed-bias EL34s on a solid-state rectifier, for a bright, cutting rock voice.

• Made in: Netherlands
• Wattage: 70W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 2× EL34

Tags: dutch, vintage, el34, crunch, mid-wattage, 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.