Crate V50 - Clean preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Crate V50 is a 50-watt valve combo from Crate's V series, the budget valve line that also included the V18 and V33. Relays switch between a Clean path with its own volume and a cascaded Drive path with gain, sharing treble, middle and bass, a voicing switch and a master, with a JFET mute during switching. Op-amps drive and recover the spring reverb, and a 12AX7 long-tail inverter with bias and balance trims drives the push-pull output stage.

• Wattage: 50W
• Channels: 2
• Preamp tubes: 3× 12AX7

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.