Fender Bandmaster 6G7 - Normal preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 6G7 is the early-1960s brownface Bandmaster head. Normal and Vibrato channels each have two inputs, volume, treble and bass, and a shared presence control sits in the feedback loop. The Vibrato channel uses the brownface harmonic vibrato, which splits the signal into high and low bands and modulates them in opposition, with speed, intensity and a pedal. A 7025 long-tail inverter drives a fixed-bias pair of 6L6GCs from a silicon diode rectifier with a choke.

Tags: american, vintage, brownface, tremolo, 6l6, clean, 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.