Crate VC-3112 - Dirty preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The VC-3112 is a 30-watt, 1x12 combo in Crate's Vintage Club valve series, with a Clean channel A and a Dirty channel B. The power-amp sheet shows a 12AX7 long-tail phase inverter driving four cathode-biased EL84s in push-pull, an op-amp-driven spring reverb with a separate reverb level for each channel, and a transistor-buffered effects loop. A solid-state rectifier and a standby switch round out the power section.

• Made in: USA
• Wattage: 30W
• Channels: 2
• Power tubes: 4× EL84

Tags: american, 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.