Fender Vibro-King preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Vibro-King is a Fender Custom Shop combo from 1993 driving three 10-inch speakers. Its single channel has volume, treble, bass and mid with a Fat switch that adds gain in the lows and mids, plus a tube-driven spring reverb with dwell, mix and tone, where an EL84 drives the tank. Optical vibrato with speed and intensity, and a split-load phase inverter with no negative feedback drive two 5881/6L6s for about 60 watts.

• Years produced: 1993–2014
• Made in: USA
• Wattage: 60W
• Channels: 1
• Preamp tubes: 5× 12AX7, 1× EL84
• Power tubes: 2× 5881

Known for: Pete Townshend, Gary Clark Jr., Tom Petty.

Heard on: Bright Lights — Gary Clark Jr. (2012).

Tags: american, modern, clean, breakup, reverb, vibrato, 6l6.

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.