Sound City 100 Mark II (DR114) - Normal preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 1968 Sound City 100 Mark II (DR114) is a 100-watt head with Brilliant and Normal channels, each with high/low inputs and volume, a shared bass/middle/treble stack and presence. Three ECC83s and an ECC81 phase inverter drive four EL34s through a Partridge output transformer, with a solid-state rectifier.

• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: 3× ECC83, 1× ECC81
• Power tubes: 4× EL34

Tags: british, 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.