Fender '59 Bassman - Bright preset

Verified · 93/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The '59 Bassman is Fender's reissue of the 5F6-A tweed Bassman, the 4×10 combo whose circuit inspired the Marshall JTM45. Three 7025s drive a cathode-follower tone stack with treble, bass, middle and presence into a pair of 6L6GCs. The 1990 reissue used a solid-state rectifier and a plywood cabinet; the later '59 Bassman LTD returned to a 5AR4 tube rectifier and a pine cabinet. Big, dynamic cleans and rich overdrive when cranked.

• Years produced: 1990–present
• Made in: USA
• Wattage: 50W
• Channels: 2
• Preamp tubes: 3× 7025
• Power tubes: 2× 6L6GC

Known for: Stevie Ray Vaughan, Jimmie Vaughan.

Heard on: Baby, Please Come Home — Jimmie Vaughan (2019).

Tags: american, tweed, reissue, 6l6, breakup, two-channel, mid-wattage.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.