What tubes does the Gibson Br1 use?

The Gibson Br1 uses 2× 6SJ7 preamp tubes and 2× 6V6 power tubes.

When was the Gibson Br1 produced?

The Gibson Br1 was produced 1946–1950.

Gibson Br1 preset

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

The Gibson BR-1 is an early post-war lap steel and electric guitar amplifier from the late 1940s, part of Gibson's BR (Budget Rocker) series aimed at the growing Hawaiian and country market. Using pentode preamp tubes and 6V6 power tubes, the BR-1 produces a warm, dark, and compressed tone suited to slide guitar, pedal steel, and early electric guitar styles. Its straightforward circuit design and limited feature set reflect the economics and technology of immediate postwar American amp manufacturing.

Years produced: 1946–1950
Made in: USA
Wattage: 10W
Channels: 1
Preamp tubes: 2× 6SJ7
Power tubes: 2× 6V6

Tags: american, vintage, clean.

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.