What tubes does the Gibson BR-1 - Normal use?

The Gibson BR-1 - Normal uses 2× 6SJ7 preamp tubes and 2× 6V6 power tubes.

When was the Gibson BR-1 - Normal produced?

The Gibson BR-1 - Normal was produced 1946–1950.

Gibson BR-1 - Normal preset

Close · 72/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

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.