Gibson BR-6F preset

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

The BR-6F is a three-input Gibson amp with a single volume control and no tone controls. A 6SJ7 pentode preamp and 6SN7 phase splitter drive a push-pull pair of 6V6GT tubes on a 5Y3GT rectifier.

• Made in: USA
• Wattage: 14W
• Channels: 1
• Preamp tubes: 1× 6SJ7, 1× 6SN7
• Power tubes: 2× 6V6GT

Tags: american, vintage, clean, 6v6.

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.