Fender Super 5B4 - Instrument preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 5B4 is the early-1950s V-front tweed Super, the last of the wedge-fronted 2×10 combos that grew out of the Dual Professional. Four identical inputs feed two 6SC7 octal dual triodes with grid-leak bias, giving Mic and Instrument volumes and one shared Tone control; a third 6SC7 is the phase inverter. A cathode-biased pair of 6L6Gs on a 5U4G rectifier makes about 25 watts of thick, warm early-tweed tone.

• Made in: USA
• Wattage: 26W
• Channels: 2
• Preamp tubes: 3× 6SC7
• Power tubes: 2× 6L6G

Tags: american, tweed, vintage, 6l6, breakup, 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.