Impact 100 - Channel 3 preset

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

The Impact 100 is a late-1960s English all-tube head with three channels, each on its own ECC83 with a volume and treble/bass network, mixed into a common phase inverter: an ECC83 paraphase in early units, a 6189W (ECC82) in the later revision. Four cathode-biased EL34s run from a silicon-bridge supply with a choke; the power section is closely based on the first Vox AC100. A loud, raw British rock amp of the early 100-watt era.

• Made in: UK
• Wattage: 100W
• Channels: 3
• Preamp tubes: 3× ECC83, 1× 6189W
• Power tubes: 4× EL34

Tags: british, vintage, el34, high-wattage, multi-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.