What tubes does the Fender Concert 6G12 - Vibrato use?

The Fender Concert 6G12 - Vibrato uses 5× 7025 preamp tubes and 2× 6L6GC power tubes.

When was the Fender Concert 6G12 - Vibrato produced?

The Fender Concert 6G12 - Vibrato was produced 1960.

Fender Concert 6G12 - Vibrato preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 6G12 is the early brownface Concert, a 4×10 combo with Normal and Vibrato channels, bass/treble/volume on each channel, a presence control and Fender's harmonic vibrato. Five 7025s drive 6L6GC output tubes on a silicon rectifier. Its brownface voice is warm and full.

Years produced: 1960
Made in: USA
Wattage: 40W
Channels: 2
Preamp tubes: 5× 7025
Power tubes: 2× 6L6GC

Tags: american, vintage, brownface, vibrato, 6l6, 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.