Sound City 100 Mark 2 - Brilliant preset

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

Sound City was a British amp brand manufactured by Dallas Arbiter in the late 1960s and early 1970s, sharing DNA with Marshall thanks to transformer designs from Jim Marshall himself. The 100-watt head delivers a bold, punchy British crunch with thick midrange and excellent harmonic saturation. These amps were favored by touring acts who needed reliability and raw power on stage.

• Years produced: 1966–1973
• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 4× EL34

Known for: David Gilmour, Pete Townshend, Huw Lloyd-Langton.

Heard on: Astronomy Domine — Pink Floyd (1967).

Tags: british, vintage, 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.