Engl E768 Retro Tube (with Reverb) - Lead preset

Verified · 83/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

Circuit schematic for the ENGL Retro Tube E768. Documents the full amplifier circuit of this vintage-voiced ENGL combo/head with onboard reverb, covering ECC83 preamp and EL34 output stages.

• Years produced: 1990s–2000s
• Made in: Germany
• Wattage: 50W
• Channels: 2
• Preamp tubes: 4× ECC83
• Power tubes: 2× EL34

Tags: german, vintage-voiced, el34, reverb.

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.